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WorksheetsChemistry // Acid & Alkali
Total questions: 13
Worksheet time: 7mins
what is an acid?
A pH lower then 7
A pH higher then 7
A pH of 7 (neutral)
What is an alkali?
A pH lower then 7
A pH higher then 7
A pH of 7 (neutral)
What happens when an alkali and acid is mixed together?
They become neutral if an acid and alkali is added equally
They explode as soon as they've touch each other
They have shown no reaction
The color changes to blue when mixed for a short time
Some food contains acid
True
False
Most cleaning products contains alkali
True
False
Lemons are sour because it has...
Citric acid
Malic acid
Fumaric acid
Tartaric acid
Select the alkali(s) in some cleaning products
Sodium hydroxide
Sodium bicarbonate (baking soda)
Potassium hydroxide
Sodium metasilicate
Sodium hydroxide is a strong alkali
True
False
Calcium hydroxide is a weak alkali
True
False
When an alkali or acid is spilled, you should...
Wipe the area with cloth quickly
Ignore it
Cover the area with an item
Quickly wash the area with lots of water
Which food(s) contains acid?
Lemon
Lime
Cola
None of the above
The acidity or alkalinity of a substance is NOT a chemical property of that substance
True
False
Acids and alkalis are chemical opposites
True
False
