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Understanding Atomic Structure and Subatomic Particles for Class 11

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michaela kennedy

2/22/2023

Chemistry

atomic structure

Understanding Atomic Structure and Subatomic Particles for Class 11

Understanding atomic structure is fundamental to grasping how matter exists in our universe.

The basic building block of matter is the atom, which consists of three main subatomic particles: protons, neutrons, and electrons. Protons carry a positive charge and are located in the nucleus along with neutrons, which have no charge. Electrons, carrying a negative charge, orbit the nucleus in electron shells or energy levels. This arrangement forms the basis of the atomic structure diagram that students commonly study in atomic structure - chemistry courses.

The number of subatomic particles in an atom determines its properties and behavior. Protons define the atomic number and element identity, while the combined mass of protons and neutrons determines the atomic mass. Isotopes are atoms of the same element with different numbers of neutrons, affecting their mass but not their chemical properties. The relative atomic mass of an element is calculated by considering the weighted average mass of all its naturally occurring isotopes. This concept is crucial in atomic structure class 11 studies and beyond. For example, carbon has three natural isotopes (carbon-12, carbon-13, and carbon-14), and its relative atomic mass formula takes into account the abundance of each isotope in nature. Understanding these relationships helps explain phenomena like radioactive decay and nuclear reactions. The study of atomic structure examples shows how different arrangements of these particles create the diverse elements we find in the periodic table, from the simplest hydrogen atom to complex heavy elements. The location and behavior of subatomic particles within the atom follow specific patterns based on quantum mechanics, which explains why elements react the way they do and form chemical bonds. This knowledge forms the foundation for understanding chemical reactions, molecular structure, and the properties of materials we encounter in daily life.

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2/22/2023

1020


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Understanding Atomic Structure and Subatomic Particles

The foundation of matter lies in understanding atomic structure - chemistry. Every substance in the universe is composed of atoms, which contain three fundamental subatomic particles: protons, neutrons, and electrons. These 3 subatomic particles each have distinct properties and locations within the atom.

When examining an atomic structure diagram, we see that protons and neutrons reside in the nucleus, while electrons orbit in shells around it. The nucleus, despite containing most of the atom's mass, occupies a surprisingly small volume compared to the entire atomic structure. This arrangement is crucial for understanding how atoms behave and interact.

The subatomic particles and their charges are precisely balanced in neutral atoms. Protons carry a positive +1+1 charge, electrons have a negative 1-1 charge, and neutrons are neutral. This balance of charges is fundamental to atomic stability and chemical behavior.

Definition: An atom is the smallest unit of matter that retains the properties of an element, consisting of a dense nucleus surrounded by electron shells.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Evolution of Atomic Theory and Models

The development of atomic structure examples through history shows how our understanding has evolved. Starting with Dalton's solid sphere model in 1805, scientists gradually uncovered the complex nature of atomic structure.

J.J. Thomson's "plum pudding" model represented atoms as positive spheres with embedded negative electrons. This was later refined by Rutherford's planetary model, which correctly placed the nucleus at the center. Bohr's contribution added electron shells, creating a more accurate representation of atomic structure class 11 concepts.

Highlight: Each historical model contributed crucial insights to our modern understanding of atomic structure, though none were completely accurate on their own.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Understanding Isotopes and Relative Atomic Mass

Isotopes and relative atomic mass are interconnected concepts that explain variations within elements. Isotopes are atoms of the same element with identical proton numbers but different neutron counts. This affects their mass while maintaining the element's chemical properties.

The relative atomic mass formula takes into account all naturally occurring isotopes of an element. It's calculated using this equation: Massnumber×percentageabundanceofisotope1Mass number × percentage abundance of isotope 1 + Massnumber×percentageabundanceofisotope2Mass number × percentage abundance of isotope 2 ÷ 100

Example: Carbon-12 and Carbon-13 are isotopes. While Carbon-12 has 6 protons and 6 neutrons, Carbon-13 has 6 protons and 7 neutrons, resulting in different mass numbers but identical chemical behavior.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

The Periodic Table: Organization and Patterns

The periodic table organizes elements based on their atomic structure and properties. Each element's position reveals key information about its subatomic particles location and behavior. The table's arrangement shows patterns in electron configurations and chemical properties.

Elements in the same group verticalcolumnsvertical columns have similar chemical properties due to their identical outer electron configurations. The periodic table also displays each element's relative atomic mass, atomic number, and symbol, making it an invaluable tool for chemical analysis and prediction.

Vocabulary: The atomic number equals the number of protons, which determines the element's identity. The mass number is the sum of protons and neutrons.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Understanding Atomic Structure and Periodic Table Development

The development of the periodic table marks a crucial milestone in understanding atomic structure - chemistry. Mendeleev's original table, organized by atomic mass rather than atomic number, demonstrated remarkable insight into atomic structure patterns. His table included elements like Hydrogen H=1H=1, Titanium Ti=50Ti=50, and Zirconium Zr=90Zr=90, arranged systematically based on their properties and masses.

Definition: The periodic table is a systematic arrangement of chemical elements organized by their atomic structure and chemical properties.

One of the most significant aspects of Mendeleev's work was his ability to predict undiscovered elements by leaving gaps in his table. This approach to organizing subatomic particles and their relationships proved revolutionary. The table included various elements with their atomic masses, such as Copper Cu=63.4Cu=63.4, Silver Ag=108Ag=108, and Mercury Hg=200Hg=200, showing clear periodic patterns.

Understanding subatomic particles location became clearer through this organizational system. The table demonstrated how elements with similar properties appeared at regular intervals, leading to our modern understanding of electron shells and atomic structure diagrams.

Highlight: Mendeleev's table differed from our modern periodic table primarily because it was organized by atomic mass rather than atomic number, yet it successfully predicted several undiscovered elements.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Ionic Bonding and Electron Transfer

Ionic bonding represents a fundamental concept in atomic structure class 11, involving the transfer of electrons between metals and non-metals. This process creates charged particles called ions, where metals form cations ++ by losing electrons, and non-metals form anions - by gaining electrons.

Example: Magnesium MgMg loses two electrons to form Mg²⁺, while Oxygen OO gains these electrons to form O²⁻, creating a balanced ionic compound.

The resulting compounds form giant ionic crystal lattices held together by strong electrostatic forces. This structure explains several key properties of ionic compounds, including:

  • High melting and boiling points due to strong ionic bonds
  • Electrical conductivity when molten or dissolved
  • Crystal formation in solid state

Understanding these concepts is crucial for grasping atomic structure examples and how subatomic particles and their charges interact in chemical bonding.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Covalent Bonding and Molecular Structures

Covalent bonding, a key topic in atomic structure notes pdf, occurs between non-metals through shared electron pairs. This sharing creates stable molecules with distinct properties, demonstrating how subatomic particles mass influences chemical behavior.

Vocabulary: A covalent bond is defined as a shared pair of electrons between two atoms, forming a stable molecule.

The strength of covalent bonds varies depending on the number of shared electron pairs and the types of atoms involved. This understanding is crucial for studying isotopes and relative atomic mass examples. Molecules formed through covalent bonding exhibit specific characteristics:

  • Low boiling points due to weak intermolecular forces
  • Non-conductivity of electricity due to lack of free electrons
  • Formation of discrete molecules or giant covalent structures

These concepts are essential for understanding how to calculate relative atomic mass of isotopes and molecular behavior.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Metallic Bonding and Material Properties

Metallic bonding represents a unique type of chemical bonding that explains the distinctive properties of metals. This bonding type is crucial for understanding atomic structure examples and how subatomic particles list elements behave in metallic form.

Definition: Metallic bonding occurs when outer shell electrons become delocalized, forming a "sea of electrons" around positively charged metal ions.

The properties of metals directly result from this bonding arrangement:

  • High electrical conductivity due to delocalized electrons
  • Malleability from the ability of metal atoms to slide over each other
  • High melting points due to strong electrostatic forces

Understanding metallic bonding is essential for grasping concepts like isotopes and relative atomic mass difference and how they affect material properties. This knowledge forms the foundation for studying atomic structure pdf materials and their applications in various fields.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

View

Understanding Moles and Chemical Calculations in Chemistry

The concept of atomic structure and moles forms the foundation of quantitative chemistry calculations. When working with chemical equations and subatomic particles, understanding molar relationships is crucial for solving complex problems.

A mole represents 6.02 × 10²³ particles AvogadrosnumberAvogadro's number of any substance. This relationship helps connect microscopic atomic structure examples with macroscopic measurements we can make in the laboratory. When calculating moles from given masses or converting between particles and moles, this constant plays a vital role.

Definition: A mole is the amount of substance containing exactly 6.02 × 10²³ elementary particles. This could be atoms, molecules, ions, or other entities.

Let's examine how molar ratios work in balanced chemical equations. Consider the reaction between aluminum and oxygen: 4Al + 3O₂ → 2Al₂O₃ The coefficients 4:3:24:3:2 represent the molar ratio between reactants and products. If we start with 0.37 moles of aluminum, we can use this ratio to determine that we'll produce 0.185 moles of aluminum oxide Al2O3Al₂O₃, as the ratio is 4:2.

Example: To convert between mass and moles:

  1. Given mass ÷ molar mass = number of moles
  2. Number of moles × 6.02 × 10²³ = number of particles
  3. Number of moles × molar mass = mass in grams

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Understanding Atomic Structure and Subatomic Particles for Class 11

M

michaela kennedy

@michaelakennedy_samm

Understanding atomic structure is fundamental to grasping how matter exists in our universe.

The basic building block of matter is the atom, which consists of three main subatomic particles: protons, neutrons, and electrons. Protons carry a positive charge and... Show more


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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Understanding Atomic Structure and Subatomic Particles

The foundation of matter lies in understanding atomic structure - chemistry. Every substance in the universe is composed of atoms, which contain three fundamental subatomic particles: protons, neutrons, and electrons. These 3 subatomic particles each have distinct properties and locations within the atom.

When examining an atomic structure diagram, we see that protons and neutrons reside in the nucleus, while electrons orbit in shells around it. The nucleus, despite containing most of the atom's mass, occupies a surprisingly small volume compared to the entire atomic structure. This arrangement is crucial for understanding how atoms behave and interact.

The subatomic particles and their charges are precisely balanced in neutral atoms. Protons carry a positive +1+1 charge, electrons have a negative 1-1 charge, and neutrons are neutral. This balance of charges is fundamental to atomic stability and chemical behavior.

Definition: An atom is the smallest unit of matter that retains the properties of an element, consisting of a dense nucleus surrounded by electron shells.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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By signing up you accept Terms of Service and Privacy Policy

Evolution of Atomic Theory and Models

The development of atomic structure examples through history shows how our understanding has evolved. Starting with Dalton's solid sphere model in 1805, scientists gradually uncovered the complex nature of atomic structure.

J.J. Thomson's "plum pudding" model represented atoms as positive spheres with embedded negative electrons. This was later refined by Rutherford's planetary model, which correctly placed the nucleus at the center. Bohr's contribution added electron shells, creating a more accurate representation of atomic structure class 11 concepts.

Highlight: Each historical model contributed crucial insights to our modern understanding of atomic structure, though none were completely accurate on their own.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Understanding Isotopes and Relative Atomic Mass

Isotopes and relative atomic mass are interconnected concepts that explain variations within elements. Isotopes are atoms of the same element with identical proton numbers but different neutron counts. This affects their mass while maintaining the element's chemical properties.

The relative atomic mass formula takes into account all naturally occurring isotopes of an element. It's calculated using this equation: Massnumber×percentageabundanceofisotope1Mass number × percentage abundance of isotope 1 + Massnumber×percentageabundanceofisotope2Mass number × percentage abundance of isotope 2 ÷ 100

Example: Carbon-12 and Carbon-13 are isotopes. While Carbon-12 has 6 protons and 6 neutrons, Carbon-13 has 6 protons and 7 neutrons, resulting in different mass numbers but identical chemical behavior.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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The Periodic Table: Organization and Patterns

The periodic table organizes elements based on their atomic structure and properties. Each element's position reveals key information about its subatomic particles location and behavior. The table's arrangement shows patterns in electron configurations and chemical properties.

Elements in the same group verticalcolumnsvertical columns have similar chemical properties due to their identical outer electron configurations. The periodic table also displays each element's relative atomic mass, atomic number, and symbol, making it an invaluable tool for chemical analysis and prediction.

Vocabulary: The atomic number equals the number of protons, which determines the element's identity. The mass number is the sum of protons and neutrons.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

Sign up to see the contentIt's free!

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Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Understanding Atomic Structure and Periodic Table Development

The development of the periodic table marks a crucial milestone in understanding atomic structure - chemistry. Mendeleev's original table, organized by atomic mass rather than atomic number, demonstrated remarkable insight into atomic structure patterns. His table included elements like Hydrogen H=1H=1, Titanium Ti=50Ti=50, and Zirconium Zr=90Zr=90, arranged systematically based on their properties and masses.

Definition: The periodic table is a systematic arrangement of chemical elements organized by their atomic structure and chemical properties.

One of the most significant aspects of Mendeleev's work was his ability to predict undiscovered elements by leaving gaps in his table. This approach to organizing subatomic particles and their relationships proved revolutionary. The table included various elements with their atomic masses, such as Copper Cu=63.4Cu=63.4, Silver Ag=108Ag=108, and Mercury Hg=200Hg=200, showing clear periodic patterns.

Understanding subatomic particles location became clearer through this organizational system. The table demonstrated how elements with similar properties appeared at regular intervals, leading to our modern understanding of electron shells and atomic structure diagrams.

Highlight: Mendeleev's table differed from our modern periodic table primarily because it was organized by atomic mass rather than atomic number, yet it successfully predicted several undiscovered elements.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

Sign up to see the contentIt's free!

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Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Ionic Bonding and Electron Transfer

Ionic bonding represents a fundamental concept in atomic structure class 11, involving the transfer of electrons between metals and non-metals. This process creates charged particles called ions, where metals form cations ++ by losing electrons, and non-metals form anions - by gaining electrons.

Example: Magnesium MgMg loses two electrons to form Mg²⁺, while Oxygen OO gains these electrons to form O²⁻, creating a balanced ionic compound.

The resulting compounds form giant ionic crystal lattices held together by strong electrostatic forces. This structure explains several key properties of ionic compounds, including:

  • High melting and boiling points due to strong ionic bonds
  • Electrical conductivity when molten or dissolved
  • Crystal formation in solid state

Understanding these concepts is crucial for grasping atomic structure examples and how subatomic particles and their charges interact in chemical bonding.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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Covalent Bonding and Molecular Structures

Covalent bonding, a key topic in atomic structure notes pdf, occurs between non-metals through shared electron pairs. This sharing creates stable molecules with distinct properties, demonstrating how subatomic particles mass influences chemical behavior.

Vocabulary: A covalent bond is defined as a shared pair of electrons between two atoms, forming a stable molecule.

The strength of covalent bonds varies depending on the number of shared electron pairs and the types of atoms involved. This understanding is crucial for studying isotopes and relative atomic mass examples. Molecules formed through covalent bonding exhibit specific characteristics:

  • Low boiling points due to weak intermolecular forces
  • Non-conductivity of electricity due to lack of free electrons
  • Formation of discrete molecules or giant covalent structures

These concepts are essential for understanding how to calculate relative atomic mass of isotopes and molecular behavior.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

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Metallic Bonding and Material Properties

Metallic bonding represents a unique type of chemical bonding that explains the distinctive properties of metals. This bonding type is crucial for understanding atomic structure examples and how subatomic particles list elements behave in metallic form.

Definition: Metallic bonding occurs when outer shell electrons become delocalized, forming a "sea of electrons" around positively charged metal ions.

The properties of metals directly result from this bonding arrangement:

  • High electrical conductivity due to delocalized electrons
  • Malleability from the ability of metal atoms to slide over each other
  • High melting points due to strong electrostatic forces

Understanding metallic bonding is essential for grasping concepts like isotopes and relative atomic mass difference and how they affect material properties. This knowledge forms the foundation for studying atomic structure pdf materials and their applications in various fields.


<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Understanding Moles and Chemical Calculations in Chemistry

The concept of atomic structure and moles forms the foundation of quantitative chemistry calculations. When working with chemical equations and subatomic particles, understanding molar relationships is crucial for solving complex problems.

A mole represents 6.02 × 10²³ particles AvogadrosnumberAvogadro's number of any substance. This relationship helps connect microscopic atomic structure examples with macroscopic measurements we can make in the laboratory. When calculating moles from given masses or converting between particles and moles, this constant plays a vital role.

Definition: A mole is the amount of substance containing exactly 6.02 × 10²³ elementary particles. This could be atoms, molecules, ions, or other entities.

Let's examine how molar ratios work in balanced chemical equations. Consider the reaction between aluminum and oxygen: 4Al + 3O₂ → 2Al₂O₃ The coefficients 4:3:24:3:2 represent the molar ratio between reactants and products. If we start with 0.37 moles of aluminum, we can use this ratio to determine that we'll produce 0.185 moles of aluminum oxide Al2O3Al₂O₃, as the ratio is 4:2.

Example: To convert between mass and moles:

  1. Given mass ÷ molar mass = number of moles
  2. Number of moles × 6.02 × 10²³ = number of particles
  3. Number of moles × molar mass = mass in grams

<h2 id="subatomicparticles">Subatomic Particles</h2>
<p>Atoms are composed of 3 parts: protons, electrons, and neutrons. Protons have a pos

Sign up to see the contentIt's free!

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Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Relative Atomic Mass and Isotope Calculations

Understanding relative atomic mass and isotopes is essential for accurate chemical calculations. The relative atomic mass formula takes into account the weighted average of all naturally occurring isotopes of an element.

When working with isotopes and relative atomic mass examples, we must consider both the mass number and the natural abundance of each isotope. This relationship is particularly important in atomic structure - chemistry calculations where precise masses are needed.

Highlight: The relative atomic mass of an element can be calculated using this formula: Relative atomic mass = Σisotopicmass×fractionalabundanceisotopic mass × fractional abundance

The study of subatomic particles and their charges helps us understand why isotopes of the same element have different masses but identical chemical properties. The subatomic particles location within the atom - protons and neutrons in the nucleus, electrons in the electron cloud - determines these characteristics.

Vocabulary: Subatomic particles list includes:

  • Protons positivecharge,mass=1amupositive charge, mass = 1 amu
  • Neutrons neutralcharge,mass=1amuneutral charge, mass = 1 amu
  • Electrons negativecharge,mass0amunegative charge, mass ≈ 0 amu

This understanding of atomic structure class 11 material forms the basis for more advanced chemical calculations and concepts. Students working with isotopes and relative atomic mass worksheet problems should always remember to account for both mass numbers and natural abundance percentages.

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Stefan S

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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

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Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

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I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

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Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

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Android user

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Greenlight Bonnie

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This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

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