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Acids and Alkalis: Chemistry Worksheet for Year 7

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Acids and Alkalis: Chemistry Worksheet for Year 7
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Ariya Khetia

@ariyakhetia_cfxu

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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

17/01/2023

2449


<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 (salt) 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 (alkaline) with vinegar (acid)

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 (red), alkali (blue), or neutral (purple)

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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Acids and Alkalis: Chemistry Worksheet for Year 7

user profile picture

Ariya Khetia

@ariyakhetia_cfxu

·

8 Followers

Follow

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

17/01/2023

2449

 

8/9

 

Chemistry

217


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

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 (salt) 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 (alkaline) with vinegar (acid)

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 (red), alkali (blue), or neutral (purple)

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.

Can't find what you're looking for? Explore other subjects.

Knowunity is the #1 education app in five European countries

Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.

Ranked #1 Education App

Download in

Google Play

Download in

App Store

Knowunity is the #1 education app in five European countries

4.9+

Average app rating

15 M

Pupils love Knowunity

#1

In education app charts in 12 countries

950 K+

Students have uploaded notes

Still not convinced? See what other students are saying...

iOS User

I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D

Philip, iOS User

The app is very simple and well designed. So far I have always found everything I was looking for :D

Lena, iOS user

I love this app ❤️ I actually use it every time I study.