Welcome to your B6 Practice Questions 2.1 – Properties of substances

1. 
What is the temperature at which a solid becomes a liquid called?

2. 

Ice melts at a temperature of °C.

3. 
The melting point of gold is 1064 °C.

4. 

Something about a substance that allows us to tell it apart from other substances is called a .

5. 
All substances have the same melting point.

6. 

The temperature at which particles throughout a liquid have enough energy to change to a gas is called the point.

7. 
At what temperature does pure water boil?

8. 

Vinegar boils at °C.

9. 
Liquid gold boils at 2856 °C.

10. 

When particles on the surface of a liquid change into a gas, this is called .

11. 
What is the difference between boiling and evaporation?

12. 

Most liquids boil only when they are .

13. 
Evaporation can only happen at a high temperature.

14. 

Air is a of gases.

15. 
Which properties does all matter have?

16. 

Gas is one of the three of matter.