7S Chapter 1 Quiz

1. A mixture is a combination of two or more pure substances.

• True
• False

2. When a pure substance melts, its particles get larger.

• True
• False

3. Another term for a heterogeneous mixture is “solution.”

• True
• False

4. Steel, air, and apple juice are examples of _____________.

• solutions
• heterogenous mixtures
• colour and smell
• shape and volume
• mechanical mixtures

5. A solid has a fixed ____________________.

• solutions
• heterogenous mixtures
• colour and smell
• shape and volume
• mechanical mixtures

6. pure substance

• 
• 
• 

7. solution

• 
• 
• 

8. mechanical mixture

• 
• 
• 

9. Which of the following is the best example of a mechanical mixture?

• 
• 
• 
• 

10. A scientist measures the length of a piece of metal that has a melting point of 400 °C. At 20 °C, the metal is 2.3 cm long. The scientist heats the metal to 125 °C. Which of the following is the most likely length of the metal at 125 °C?

• 2.1 cm
• 2.2 cm
• 2.3 cm
• 2.4 cm