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Contents
7E Acids and Alkalis
What are acids and alkalis?
Hazard symbols
Indicators and the pH scale
Neutralization
Summary activities
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What is an acid?
Acids are a group of chemicals.
What do you know about acids? Are all acids dangerous?
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What is an acid?
Acids are a group of chemicals.
Which of these items contains an acid?
everyday acids laboratory acids
Can you think of other examples of acids?
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What is a weak acid?
Acids are found in household items such as food, drink
and beauty/skincare products.
It is safe to handle these acids and even taste them, if they
are for eating! These acids are known weak acids.
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What is a strong acid?
Some acids, like those found in the laboratory or a car
battery, are very dangerous (too dangerous to taste or touch).
These acids are said to be corrosive as they can damage
other materials by wearing them away! They are strong acids.
Why must strong acids always be handled very carefully?
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