5.P.3.2 #7: Schoolnet (Heating & Cooling)

Front

What happens to sugar when it is dissolved in water?

Back

The sugar molecules separate and spread out in the water.

Front

What is the effect of heating water on the dissolving process of sugar?

Back

Heating the water increases the temperature, which helps the sugar dissolve more quickly.

Front

What remains constant when ice melts into water?

Back

The mass of the ice remains the same when it melts.

Front

What is the difference between boiling and freezing water in terms of time?

Back

It takes less time to boil water than to freeze it into ice.

Front

What property of stones makes them good for cooking over a fire?

Back

Stones absorb and hold heat well.

Front

Which material is the best conductor of heat for heating water?

Back

Metal is the best conductor of heat among glass, metal, and plastic.

Front

What is the process called when a solid turns into a liquid?

Back

Melting.

Front

What is the process called when a liquid turns into a solid?

Back

Freezing.

Front

What is the boiling point of water at sea level?

Back

100 degrees Celsius (212 degrees Fahrenheit).

Front

What is the freezing point of water at sea level?

Back

0 degrees Celsius (32 degrees Fahrenheit).