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ATOMS Atoms contain protons, neutrons and electrons. They Also have a radius of about 0. I nanometers (Ix10^-10 m). Electrons The Nucleus It is in the middle of the atom. It contains protons and neutrons. It has a positive charge because of the protons. • Almost the whole mass of the atom is in the nucleus The Electrons Particle Proton Neutron Electron They move around the nucleus in shells They are negatively charged They almost have no mass Protons: 11 Neutrons: 23-11= 12 Electrons:11 23 Na || Relative mass 1 1 0 Relative charge +1 0 -1 mass number Atomic number neutrons Protons Atomic number= number of protons Mass number number of protons+ number of neutrons Number of neutrons= mass number- atomic number Number of electrons atomic number Positive ion= negatively charged Negative ion= positively charged An ion is an atom or group of atoms that has lost or gained electrons
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Chapter 1: Matter-Solids, Liquids, and Gasses
2023 8th grade science on molecules, and matter.
ATOMS Atoms contain protons, neutrons and electrons. They Also have a radius of about 0. I nanometers (Ix10^-10 m). Electrons The Nucleus It is in the middle of the atom. It contains protons and neutrons. It has a positive charge because of the protons. • Almost the whole mass of the atom is in the nucleus The Electrons Particle Proton Neutron Electron They move around the nucleus in shells They are negatively charged They almost have no mass Protons: 11 Neutrons: 23-11= 12 Electrons:11 23 Na || Relative mass 1 1 0 Relative charge +1 0 -1 mass number Atomic number neutrons Protons Atomic number= number of protons Mass number number of protons+ number of neutrons Number of neutrons= mass number- atomic number Number of electrons atomic number Positive ion= negatively charged Negative ion= positively charged An ion is an atom or group of atoms that has lost or gained electrons
ATOMS Atoms contain protons, neutrons and electrons. They Also have a radius of about 0. I nanometers (Ix10^-10 m). Electrons The Nucleus It is in the middle of the atom. It contains protons and neutrons. It has a positive charge because of the protons. • Almost the whole mass of the atom is in the nucleus The Electrons Particle Proton Neutron Electron They move around the nucleus in shells They are negatively charged They almost have no mass Protons: 11 Neutrons: 23-11= 12 Electrons:11 23 Na || Relative mass 1 1 0 Relative charge +1 0 -1 mass number Atomic number neutrons Protons Atomic number= number of protons Mass number number of protons+ number of neutrons Number of neutrons= mass number- atomic number Number of electrons atomic number Positive ion= negatively charged Negative ion= positively charged An ion is an atom or group of atoms that has lost or gained electrons
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Knowunity is the # 1 ranked education app in five European countries
Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.
Still not sure? Look at what your fellow peers are saying...
iOS User
I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D
Stefan S, iOS User
The application is very simple and well designed. So far I have found what I was looking for :D
SuSSan, iOS User