Science 9 - Matter and Chem - Changing Matter

1. What is a physical property of a substance?

• a. Reactivity
• b. Color
• c. Flammability
• d. Ability to corrode

2. Under what conditions is a chemical change more likely to occur?

• a. Low temperature and high pressure
• b. High temperature and low pressure
• c. Low temperature and low pressure
• d. High temperature and high pressure

3. Which of the following is an example of a chemical change?

• a. Melting ice
• b. Boiling water
• c. Rusting of iron
• d. Dissolving salt in water

4. What is a common characteristic of a chemical change?

• a. Reversibility
• b. Formation of a new substance
• c. No energy change
• d. No change in color

When ice melts into water, what type of change is it?

• a. Physical change

• b. Chemical change

• c. Nuclear change

• d. Atomic change

6. What is a key indicator that a chemical reaction has occurred?

• a. Change in color
• b. Change in state
• c. Change in shape
• d. Change in volume

7. Which of the following is NOT a characteristic of a chemical change?

• a. Irreversibility
• b. Formation of a new substance
• c. Change in physical state
• d. Absence of energy changes

8. In which of the following processes is does a chemical change occur?

• a. Condensation
• b. Freezing
• c. Combustion
• d. Deposition

9. What is a chemical property of a substance?

• a. Color
• b. Density
• c. Reactivity with acid
• d. Melting point

10. Under what circumstances can a physical change result in a change of properties?

• a. High temperature
• b. High pressure
• c. Extreme conditions
• d. None of the above