National 4 And 5 Chemistry Test Sheet

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National 4 and 5 Chemistry Unit 1
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National 4 outcomes are in lighter font.
National 5 outcomes are in bold
Acids and Alkalis
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pH Scale
1. The pH scale is a continuous range from below 0 to above
?
14.
2.Acids have a pH of less than 7; alkalis have a pH of more
?
than 7; pure water and neutral solutions have a pH equal to 7.
3. Non-metal oxides which dissolve in water produce acid
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solutions
4. Sulphur dioxide, produced by the burning of fossil fuels, and
nitrogen dioxide, produced by the sparking of air in car
?
engines, dissolve in water in the atmosphere to produce acid
rain.
5. Metal oxides and hydroxides which dissolve in water
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produce alkaline solutions
6. Ammonia dissolves in water to produce an alkali
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7. Acids and alkalis are in common use in both the laboratory
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and the home.
8. In water and neutral solutions, the concentration of hydrogen
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1

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