Intermediate 1 Unit 1d Acids

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Intermediate 1 Unit 1d Acids Alkalis
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How would you measure the pH of a substance?
A pH paper or universal indicator and check the
colour
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Name a acid used in the lab.
Hydrochloric acid, sulphuric acid , nitric acid.
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Name an alkali used in the lab.
Sodium hydroxide, lime water and ammonia solution
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What are the pH values for an acid?.
Below 7
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What is the pH of a neutral solution?
7
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What are the pH values for an alkali?
Above 7
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What happens to the acidity as the pH of an acid
goes down?
It becomes more acidic.
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What happens to the pH of an acid when diluted
with water?
pH goes up
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What happens to the pH of an alkali when diluted
with water?
It goes down
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What happens to the acidity of an acid when
diluted with water?
It becomes less acidic
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What happens to the alkalinity of an alkali when
diluted with water?
It becomes less alkaline
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Name a common household acid.
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Name a common household alkali.
Baking soda, oven cleaner, dishwasher powder,
bleach and soaps.
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What type of chemical reaction takes when an acid
is used?
Neutralisation
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What are the products when sodium hydroxide
neutralises hydrochloric acid?
Sodium chloride and water
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Name the salt produced when potassium hydroxide
neutralises sulphuric acid.
Potassium sulphate
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Name the salt produced when calcium carbonate
neutralises nitric acid.
Calcium nitrate
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What happens to the pH of an acid when it is
neutralised?
It goes up to 7
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What happens to the pH of an alkali when it is
neutralised?
It goes down to 7
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What are the products when a metal carbonate
neutralises an acid?
Salt, water and carbon dioxide gas
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Give an everyday example of neutralisation.
Treatment of indigestion, reducing tooth
decay, reducing soil acidity
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What is produced when an alkali neutralises an
acid?
Salt and water
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Which oxides dissolve in water in the atmosphere
to produce acid rain?
Carbon dioxide, sulphur dioxide and nitrogen
dioxide
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How is sulphur dioxide produced?
Burning fossil fuels
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How is nitrogen dioxide produced in a car engine?
Sparking of air in the engine
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Give an example of the damaging effect of acid
rain?
Destroys buildings made from rock, structures
made from steel/iron, soils and animal and plant
life.
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Intermediate 1 Unit 1d
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