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Acids and Alkalis
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How is sulfur dioxide released into the atmosphere?
Burning of fossil fuels
What gas causes acid rain?
Sulfur dioxide
What is present in your mouth that causes tooth decay?
Bacteria
what colour does red litmus turn with alkali?
Blue
How would you describe an acid to someone?
Sour taste
How would you describe an alkali to someone?
Soapy, slippery feel
What does dilute and concentrated mean?
Dilute is with water added
What hazard symbol would you expect to find on a strong alkali?
Corrosive
What pH is blood?
7 - it is neutral
What would be an example of a strong acid?
Hydrochloric/Sulfuric acid
What could a farmer put on his fields to neutralise soil pH?
Lime (Calcium Carbonate)
is a wasp sting acidic or alkaline?
Akaline
What would help a bee sting?
Baking soda or onion juice
What could be used to neutralise excess stomach acid?
indigestion tablets
What colour would you expect drain cleaner to be in universal indicator?
purple
What colour would you expect lemon juice in universal indicator?
Orange/yellow
Is ethanoic acid a weak or strong acid?
Weak acid (Vinegar)
What pH is neutral?
7
Why is litmus paper a bad indicator?
It doesn't tell the strength of the acid or alkali
What colour does a strong alkali turn in universal indicator?
Purple
What colour does a strong acid turn in universal indicator?
Red
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