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Acids and Alkalis: Chemistry Worksheet for Year 7

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Ariya Khetia

1/17/2023

Chemistry

Chemistry- Acids and Alkalis

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The ph scale

Acids and Alkalis: Chemistry Worksheet for Year 7

Chemistry acids and alkalis is a comprehensive guide covering laboratory and everyday acids, alkalis, neutralization reactions, and pH testing methods. This essential topic explores the safe handling of corrosive substances, practical applications of neutralization, and various testing methods using indicators.

• Laboratory acids include hydrochloric acid, sulfuric acid, and nitric acid, while common household acids include lemon juice and vinegar
• Neutralisation reactions between acids and alkalis produce salt and water, following the formula acid + alkali = salt + water
• pH testing can be conducted using pH probe indicators, universal indicators, or litmus paper, with pH meters being the most accurate method
• Safety precautions are essential when handling strong acids and alkalis
• Practical applications include treating indigestion, soil treatment, and insect sting remedies

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1/17/2023

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Summary sheet for acids and alkilis. Diagrams included such as a pH scale and hazard symbols and meanings. Please feel free to use and comment your opinions!

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Subjects

Chemistry

Acids & alkalis

The ph scale

 

Chemistry

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Jan 17, 2023

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Acids and Alkalis: Chemistry Worksheet for Year 7

A

Ariya Khetia

@ariyakhetia_cfxu

Chemistry acids and alkalis is a comprehensive guide covering laboratory and everyday acids, alkalis, neutralization reactions, and pH testing methods. This essential topic explores the safe handling of corrosive substances, practical applications of neutralization, and various testing methods using indicators.... Show more

<h2 id="acidsinalab">Acids in a Lab</h2> <p>In a laboratory setting, the following acids are commonly used:</p> <ul> <li>Hydrochloric acid<

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Understanding Acids, Alkalis, and Neutralization

The first page introduces fundamental concepts of acids and alkalis, both in laboratory and everyday settings, along with neutralization reactions and testing methods. The content covers safety considerations, practical applications, and various testing procedures.

Definition: Neutralization is a chemical reaction between an acid and an alkali that produces salt and water as products.

Example: A common neutralization reaction occurs between sodium hydroxide and hydrochloric acid, producing sodium chloride saltsalt and water.

Vocabulary:

  • Corrosive: Substances that can damage or destroy other substances through chemical reactions
  • pH Scale: A measure from 0-14 indicating how acidic or alkaline a substance is

Highlight: Strong acids and alkalis are corrosive and require proper safety equipment, including goggles, when handling.

Example: Common everyday applications of neutralization include:

  • Using antacids to neutralize stomach acid
  • Adding lime to neutralize acidic soil for better crop growth
  • Treating wasp stings alkalinealkaline with vinegar acidacid

The page also details various testing methods for identifying acids and alkalis:

  1. pH Probe: Provides accurate measurements
  2. Universal Indicator: Shows strength on the pH scale through color changes
  3. Litmus Paper: Changes color to indicate acid redred, alkali blueblue, or neutral purplepurple

The pH scale ranges from 0-14, with strong acids at the lower end and strong alkalis at the higher end, while 7 represents neutral substances.

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