Changes in Matter Affecting the Environment and Other Li

1. How do Changes in Matter Affect the Environment and Other Living Things?

• beneficial

• harmful

• both

• none of the above

2. Burning of paper is a _________ change.

• Physical Change

• Chemical Change

• Both a and b

• Neither a and b

3. Which of the following statements is true?

• All chemicals are harmful

• All chemicals are useful

• Chemicals maybe harmful or useful

• All chemicals can be deadly

4. To prevent contaminating or polluting our food, air and water, we should practice sorting, recycling, reducing and reusing.

• false

• true

• none of the above

• all of the above

5. Store food and poisonous substances separately and out of reach of children

• true

• false

• none of the above

• all of the above

6. Kerosene, gasoline and other fuels are

• flammable substance

• toxic substance

• poisonous substance

• all of the above

7. Are wastes that can decay easily with the help of microorganisms.

• Recycled waste

• Non-biodegradable waste

• Biodegradable waste

• Hazardous waste

8. Clouds fall to earth as rain

• Chemical Change

• Physical Change

• both

• none of the above

9. Dumping spoiled food to animals in the street.

• beneficial

• toxic

• harmful

• helpful

10.Which is a Chemical Change?

• change in shape

• change in size

• change in state

• change in composition