Read and understand each question below. Write the letter of the correct answer on the space provided.
1. When is a material useful?
a. When the material serves a purpose
c. When the material hazards
b. When the material brings harm
d. When the material is toxic
2. When is a material harmful?
a. When the material can be used many times.
b. When the material can be used in cooking.
c. When the material gives other uses aside from its purpose.
d. When the material brings danger to people and environment.
3. What happens to biodegradable waste when they are thown?
a. Melts by the sun.
c. Broken into pieces.
b. Decomposed by bacteria. d. Flattened.
4. Which of the following is a non-biodegradable waste?
a. paper
c. leaves
b. rubber
d. wood
5. Where do we place our garbage properly?
a. in the river b. in the mountains c. in the landfills
d. in the lakes
6. What is matter?
a. Everything around us.
c. Anything that has mass and volume.
b. Anything that has mass.
d. Anything that has volume.
7. Which of the following is NOT a state of matter?
c. liquid
d. mass
8. Which TWO properties best describe an egg?
a soft
b. bendable C. smooth
d. breakable
9. It is the change of matter in form only not in composition
a. Physical change
c. Chemical change
b. Environmental change
d. None of the above
10. Which is an example of physical change?
a. freezes to ice
c. Naphthalene balls turn to vapour
b. Wood turns to alcohol
d. Both a and b
11. Physical change happens when materials undergo a change in ...
a. size
b. shape
c. phase
d. all of them
12. Which statement is true about physical change?
a. It does not change a materials composition.
b. It does not change a material's size and shape.
c. It does not involve the physical properties of matter.
d. It does not involve matter
13. Which is a physical change?
a. bruning toast
b. fire works
c. rosying bycycle
d. freezin chocolate covered straw berries
complte answer po ah
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Answer:
1.) a
2.) c
sorry inde kona alam ang iba