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WorksheetsPROPERTIES OF ACID AND ALKALI
Total questions: 30
Worksheet time: 15mins
What is the taste of acids?
(a)
What is the taste of alkalis?
(a)
Acids can be corrosive and must be handled with care.
True
False
Acids turn red litmus paper blue.
True
False
Properties of acid
pH less than 7
Corrosive
Tastes bitter
Turns blue litmus paper to red
Which of the following will change the red litmus paper to blue?
vinegar
lemon
Soap water
coffee
Acid changes the colour of a ................. litmus paper to ........
red.....blue
red....purple
blue...red
blue...colourless
What is the pH of a neutral solution?
1
5
7
14
Acid and alkalis show their properties only in the presence of (a)
What happens after a few drops of concentrated sodium hydroxide is dropped on the filter paper?
the filter paper becomes blue
a hole appears on the filter paper
a pungent smell is released from the filter paper
a translucent spot appears on the filter paper
The diagram shows what happens when red and blue litmus papers are dipped in Solution X.
Which of the following substances could possible be solution X?
Vinegar
Lime juice
Distilled water
Sodium hydroxide
Which of the following is acid?
Which of the following is alkali?
Reacts with metals
acid
base
both acid and base
Which of the following will change the red litmus paper to blue?
Sodium hydroxide
Hydrochloric acid
Sulphuric acid
Nitric acid
Is it acid or alkali when the pH is 4 pH
Acid
Alkali
Neutral
Alkali could also be known as
Acid
Weak acid
Base
Maze
What kind of acid is present in your stomach?
Sulfuric acid
Hydrochloric acid
Citric acid
Nitric acid
Angel dips red litmus paper into solution Y. Red litmus paper turns to blue. This shows that solution Y is
Acidic
Alkaline
Blue litmus is dipped into solution X in a beaker. Blue litmus paper turns red. This shows that solution X is
Acidic
Alkaline
Diagram shows an effect on filter paper after a few drops of concentrated hydrochloric acid drop on it.
Inference for this experiment is ...
Hydrochloric acid is corrosive
Hydrochloric acid is flammable
Hydrochloric acid is hot
When metal X added into solution Y, a bubble of hydrogen gas released. What is solution Y?
Sodium hyroxide solution
Hydrochloric acid
Sulphuric acid
Vinegar
The Latin word, acidus, means ... . It is the origin of the word acid.
sour
sweet
ashes of plants
ashes of animals
The Arabic word, alqali, means ... . It is the origin of the word alkali.
sour
sweet
ashes of plants
ashes of animals
10 drops of dilute hydrochloric acid in a Petri dish.
The substance in the Petri dish is tested with a piece of pH paper and resulted the colour in this figure.
What is the property value of this acid?
pH value less than 7
pH value more than 7
pH value is 7
pH value is null
You may search "Burning of Magnesium Ribbon Experiment" on YouTube to make this question interesting.
A magnesium ribbon is put into a beaker filled with dilute hydrochloric acid. The beaker is closed for one minute. A wooden splinter is lighted at the mouth of the test tube and resulted a SPARK.
What is the property of this acid?
Reacts with metals to produce hydrogen gas
Does not react with metals
Reacts with metals to produce oxide gas
Reacts with metals to produce methane gas
What is the meaning of the above hazard warning symbol?
Corrosive
Explosive
Toxic
Radioactive
orange juice
acid
base
both an acid and a base
Soap
acid
base
an acid and a base
