Acids are substances that can sometimes ‘burn’ or sting you.
Vinegar is an acid.
There is acid in our stomachs that helps with the digestion of food.
What you will learn in this chapter:
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How to distinguish between acids and bases.
Examples of laboratory and everyday acids and bases. What an indicator is and how it is used. What happens in a neutralisation reaction.
How to prepare salt by reacting an acid and a base.
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What causes heartburn and how is it treated?
Can you crack this code? The first letter of each of these images spells out a key word that you will come across in this section. Use the hints provided if you need to, or revisit the Puzzler after you finish this chapter.
1. 2. 3. 4.
Common
laboratory acid found in car batteries
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Name for a base that is soluble in water
1. ___ 2. ___
Acid–base indicator 3. ___ 4. ___
Method to find out how much acid is needed to neutralise an alkali
