Freezing water into ice is a chemical change.
Question types
Changes – Physical and Chemical question types
100 questions across 13 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
100
Questions
13
Question groups
5
Question types
01
Write True or False, correct and rewrite the false statements.
13 Q→02Answer the following questions:[1 M]
12 Q→03Fill in the blanks
8 Q→04Give scientific reasons:
6 Q→05Answer the following questions: [2 M]
4 Q→06Answer the following questions:[3 M]
2 Q→07Do as instructed[4M]
1 Q→08Distinguish between
4 Q→09Do as instructed[3 M]
1 Q→10Match the following.
2 Q→11Define The Following.
14 Q→12Name or Give two example of:
10 Q→13Under which different types can the following changes be classified? Question a.
23 Q→Sample Questions
Changes – Physical and Chemical questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Cooking a vegetable is chemical change.
Heating of iron is a physical change.
Setting of curd is a physical change.
Breaking down of larger food particles into smaller particles is a chemical change.
Which hands of a clock show periodic changes from 6.00 am to 6.00 pm? How many times?
Which type of change is the change of seasons from summer to rains to winter?
What kind of a change is the conversion of milk into yoghurt?
What kind of change is the falling of a tree in a storm?
A meteor streaking across the sky.
Iron benches kept in lawns and gardens get rusted. It is a change because a new ………………. is formed.
Grinding of wheat grain changes its size, it is a ………………. .
A physical change is generally ………………. .
Making sugar solution is a ………………. change.
Galvanization is a process used to prevent the rusting of ………………. .
The burning of wax is a chemical change
A dry handkerchief gets wet at once on dipping in water, but it takes long for a wet handkerchief to dry.
Copper and brass utensils should be tinned.
A Wooden article should be polished.
An iron article should be given a coat of paint.
A chemical change in a substance.
A physical change in a substance.
What are periodic and non-periodic changes?
Which of the following are physical changes and which are chemical changes?
(making a table from wood, burning wood, breaking of a glass object, ripening of a tomato, rusting of iron.
(making a table from wood, burning wood, breaking of a glass object, ripening of a tomato, rusting of iron.
Give some examples of fast and slow changes that occur in your surroundings.
What is meant by irreversible change? Give some examples.
Which changes shown in the pictures below are temporary.
1.
1.
2.Which of the changes are permanent?
3.In which did the original matter undergo a change?
4.In which the original matter remain unchanged?
5.In which of the changes was a new substance with a new property formed?
Reversible change and Irreversible change
Natural change and Man-made change
Periodic changes and Non-periodic change
Physical change and Chemical change
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o’clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lighting too. Sahil was enjoying his dinner in the dim light.
It was nearing six o’clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lighting too. Sahil was enjoying his dinner in the dim light.
| Column ‘A’ | Column ‘B’ |
| 1. Depositing a layer of zinc on Iron | a. Tinning |
| 2. Souring of milk | b. Rust |
| 3. Curdling of milk | c. Galvanization |
| 4. Iron oxide | d. Chemical changes |
| 5. Depositing layer of tin on copper and brass article. | e. Man-made changes. |
| Column ‘A’ | Column ‘B’ |
| 1. Photosynthesis | a. Physical change. |
| 2. Dissolving sugar in water | b. Chemical change |
| 3. Burning of wood | c. Man-made change. |
| 4. Melting of wax | d. Periodic changes. |
| 5. Digestion of food | e. Non-periodic change |
| 6. Heartbeat | f. Chemical change. |
| 7. Occurrence of earthquake. | g. Physical change. |
| 8. Deforestation | h. Chemical change. |
Harmful change
Useful change
Man-made change
Natural change
Tinning
Two harmful changes.
Two useful changes.
Two manmade changes.
Two natural changes.
Two irreversible changes.
Bursting of balloon.
Germination of seed.
Melting of ice into water
Change-in climate.
Ripening of fruit.
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