Water - cycle 1

What is the definition of boiling?

• A process whereby solid changes to liquid at a fixed temperature.

• A process whereby liquid changes to gas at a fixed temperature.

• A process whereby water changes to steam.

• A process whereby gas changes to liquid at a fixed temperature.

What is the definition of freezing?

• A process whereby solid changes to liquid at a fixed temperature.

• A process whereby liquid changes to solid at a fixed temperature.

• A process whereby water changes to ice at 0^oC.

• A process whereby gas changes to liquid at a fixed temperature.

What is the definition of condensation?

• A process whereby gas changes to liquid.

• A process whereby gas changes to liquid at a fixed temperature.

• A process whereby water vapour changes to water droplets.

• A process whereby liquid changes to gas at a fixed temperature.

What is the definition of melting?

• A process whereby gas changes to liquid at a fixed temperature.

• A process whereby liquid changes to solid.

• A process whereby ice changes to water.

• A process whereby solid changes to liquid at a fixed temperature.

Freezing is a process whereby

• a solid gains heat and becomes liquid.

• a liquid gains heat and becomes gas.

• a liquid losses heat and becomes solid.

• a gas losses heat and becomes liquid.

Melting is a process whereby

• a solid gains heat and becomes liquid.

• a liquid gains heat and becomes gas.

• a liquid losses heat and becomes solid.

• a gas losses heat and becomes liquid.

What is state X and process D

• gas, condensation

• solid, freezing

• gas, evaporation

• solid, melting

What is state Y and process B

• liquid, melting

• liquid, condensation

• gas, evaporation

• gas, melting

What is state Z and process C?

• solid, freezing

• solid, evaporation

• gas, condensation

• gas, boiling

Which of the following change below decreases the rate of clean water collected?

• pour more sea water into the beaker

• use a bigger plate

• increase the temperature of the flame

• replace the plate with a better conductor of heat