C1-2 Changing state

Name the process that occurs when a solid is converted to a liquid.

• Boiling

• Condensing

• Evaporating

• Melting

Name the process that occurs when a liquid is converted into a gas.

• Boiling

• Melting

• Condensing

• Freezing

Name the process that occurs when a gas is converetd into a liquid.

• Boiling

• Freezing

• Condensing

• Melting

Name the process that occurs when a liquid is converted into a solid.

• Boiling

• Melting

• Condensing

• Freezing

At room temperature (25'C) what state is mercury?

• Solid

• Liquid

• Gas

Answer explanation

Mercury melts at -39 room temperature is above this and below the boiling point at 357'C.

At 100'C what state is chlorine?

• Solid

• Liquid

• Gas

Answer explanation

Since chlorine boils at -34 and 100 is well over that value its a gas.

At 10,000'C what state is aluminium?

• Solid

• Liquid

• Gas

At -100'C what state is oxygen?

• Solid

• Liquid

• Gas

Ethanol melts at -114'C and boils at 78'C. Predict the state of ethanol at -150'C.

• Solid

• Liquid

• Gas

Methane melts at -182'C and boils at -164'C. Predict its state at room temperature.

• Solid

• Liquid

• Gas