NAME:
1.
Label Acids and Alkalis to the examples below: (4 marks)
2.
What range of numbers would you expect on the pH scale for an acid? (1 mark)
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3.
What range of numbers would you expect on the pH scale for an alkali? (1 mark)
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4.
What is a neutral substance? Give one example (2 marks)
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5.
How do we reduce the acid in our mouth from damaging our teeth? Explain. (2 marks)
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6.
Acid rain can damage soil and lakes, How do we make our soil and lakes safe? (2 marks)
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7.
Define neutralisation. (2 mark)
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8. Which are the true statements? (6 marks)
NAME:
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9.
Alkalis are in cleaning products.
Indicators are used to identify acids and alkalis.
Universal Indicator turns red in alkalis.
Universal Indicator turns red in acids.
Universal Indicator turns yellow in weak acids.
Universal Indicator turns blue in weak alkalis.
Toothpaste is an alkali.