Topic 2, lesson 1 Quiz

During this process, you start and finish with the same kind of matter.

• chemical change

• Chemical reaction

• physical change

• the mixing of baking soda and vinegar

1. Matter exists in only two states in nature.

• True
• False

2. Changing from one state of matter to another does not involve energy.

• True
• False

3. Water starts to boil at 100°C.

• True
• False

4. Frost found in a freezer comes from ice cubes.

• True
• False

5. When heat is added to a liquid, its particles slow down and become more organized.

• True
• False

6. Which kind of change alters the form of an object without changing its chemical make up?

• a. chemical change
• b. physical change
• c. gradual change
• d. sudden change

7. Luis set a glass of ice water outside in the sunshine on a warm day. When he looked at the glass 10 minutes later, the contents had changed. Which kind of change took place?

• a. freezing
• b. transpiration

• c. condensation

• d. physical change

8. Look at this picture showing water in three different states. Notice the boxes showing how the water particles are arranged in each state. In which form is water the least dense?

• a. solid
• b. liquid
• c. gas
• d. All forms have the same density.

9. Which material requires more heat to melt?

• a. copper
• b. nitrogen
• c. water
• d. table salt
• d. iron