Worksheets6.1 Properties of acid and alkali
Total questions: 14
Worksheet time: 11mins
Acid is a chemical compound that produces ____________ when dissolves in water.
hydroxide ions, OH-
hydrogen ions, H+
Alkali is a chemical compound that produces ____________ when dissolves in water.
hydroxide ions, OH-
hydrogen ions, H+
Alkali tasted like _________ which is bitter.
lemon
vinegar
banana
bittergourd
Alkali has a pH value of ________
pH 1 - 14
pH 1 - 6
pH 7
pH 8 - 14
Acid has a pH value of ________
pH 1 - 14
pH 1 - 6
pH 7
pH 8 - 14
Examples of INORGANIC ACID are ?
Acetic acid (Vinegar), Tartaric acid (Grapes)
Formic acid (Bees, Ants)
Tannic acid (Tea)
Carbonic acid (Carbonated drinks)
Citric acid (Lime,Orange)
Malic acid (Green apple)
Lactic acid (Sour milk, Yoghurt)
Hydrochloric acid
Sulphuric acid
Nitric acid
Formic acid (Bees, Ants)
Tannic acid (Tea)
Carbonic acid (Carbonated drinks)
Oxide or metal hydroxide dissolves in water to form alkali, which one are the examples of alkali ?
Potassium hydroxide
Hydrochloric acid
Carbonic acid
Ammonia
Turn RED litmus paper to BLUE referring to __________
Neutral
Acid / Alkali
Alkali
Acid
Filter paper corrodes(being corrosive) when there is ________ substances was put in there.
Acid / Alkali
Acid
Neutral
Alkali
Which one reacts with metal and produce hydrogen gas ?
Alkali
Acid
Neutral
Sour
Which one of the substances used feel slippery(滑) when touched ?
Lemon
Car battery
Detergent
Ascorbic acid
What happens to the litmus paper when you test it with anhydrous acid/alkali ?
No changes
Red litmus paper turns to blue
Blue litmus paper turn to red
Red
How many indicators available at the laboratories ?
3
4
2
1
What happens to the colour of the phenolphthalein when it was tested with shampoo ?
Turn colourless
Turn green
Turn pink
Turn red
