Changes around us - Assessment

1.

Multiple Choice

30 sec

1 pt

Which of these is NOT a reversible change?

Water to Ice

Juice to Popsicle

Cookie Dough to Cookie

Melting Chocolate

2.

Multiple Choice

30 sec

1 pt

Freezing juice is an example of a(n) ________

physical change

chemical change

3.

Multiple Select

30 sec

1 pt

Identify the type of change shown here-

PHYSICAL CHANGE

NO CHANGE

REVERSIBLE CHANGE

IRREVERSIBLE CHANGE

4.

Multiple Select

30 sec

1 pt

PHYSICAL CHANGE

IRRIVERSIBLE CHANGE

NO CHANGE

CHEMICAL CHANGE

5.

Multiple Choice

30 sec

1 pt

Is a burning candle a physical or chemical change?

Physical

Chemical

BOTH

6.

Multiple Choice

2 mins

1 pt

Kajal left her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer?

chemical

electrical

thermal

physical

7.

Multiple Select

30 sec

1 pt

Grilling of food is a ________ type of change

PHYSICAL CHANGE

CHEMICAL CHANGE

REVERSIBLE CHANGE

NO CHANGE

8.

Multiple Choice

30 sec

1 pt

An irreversible change is one in which---------

The original substances can be obtained

The original substances can sometimes be obtained

The original substance cannot be obtained

No new substance is formed

9.

Multiple Choice

30 sec

1 pt

What happens in ALL chemical changes?

Change in state of matter

A new substance is formed

Bubbles are produced

An explosion

10.

Multiple Choice

30 sec

1 pt

Is burning wood a chemical or physical change?

chemical

physical

11.

Multiple Choice

10 sec

1 pt

Photosynthesis is an example of a

physical change

chemical change

12.

Multiple Choice

30 sec

1 pt

Setting of curd from milk is __________________ change

slow, chemical and irreversible

fast, physical and reversible

slow, physical and reversible

13.

Multiple Choice

30 sec

1 pt

A teacher wants to show clear difference between physical and chemical changes, which one of the following will be suitable for the same

boiling of milk and freezing it

setting curd and making paneer

melting ice and freezing it

14.

Multiple Select

30 sec

1 pt

Folding of paper is a ____________ change while burning it is a _____________ change.

physical, physical

fast, physical

physical, chemical

15.

Multiple Choice

30 sec

1 pt

Spreading of Viral infections like COVID-19, is a ______________ change

fast

slow

physical

moderate

16.

Multiple Select

30 sec

1 pt

A seed grows to form a seedling and further a plant, this is a ________________ change

Fast

Slow

Temporary

Reversible

17.

Multiple Choice

30 sec

1 pt

When cooked food is left outside at room temperature, it gets spoilt. This is an example of __________ change.

Reversible

Physical only

Chemical only

Irreversible

18.

Multiple Choice

30 sec

1 pt

A child was learning origami by folding paper, this involves __________ change

Chemical

Irreversible

Physical

No change

19.

Multiple Choice

30 sec

1 pt

Mrs. Aggarwal accidentally mixed oil in water while working in kitchen. Which method can be used to separate oil and water.

Distillation

Centrifugation

Evaporation

Separating funnel

20.

Multiple Choice

30 sec

1 pt

While making salt from sea water, _________ process is used. It involves _______ change.

condensation, slow

distillation, fast

evaporation, reversible

crystallisation, irreversible

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