Beckham's Density Test

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into vapor at the surface of the liquid, occurring at any temperature.

Front

What is boiling?

Back

Boiling is the rapid vaporization of a liquid that occurs throughout the liquid when it reaches its boiling point.

Front

What is the difference between evaporation and boiling?

Back

Evaporation occurs at the surface, while boiling occurs throughout the liquid.

Front

What happens to the temperature of a substance during melting?

Back

The temperature remains constant during melting as heat energy is used to break bonds between molecules.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance due to an increase in temperature.

Front

What is thermal contraction?

Back

Thermal contraction is the decrease in volume of a substance due to a decrease in temperature.

Front

Why does a door stick on a hot day?

Back

The door material expands in heat, causing it to fit more tightly in the frame.

Front

How do atoms behave in a solid?

Back

Atoms in a solid vibrate in fixed positions and do not move freely.

Front

What is the exception to the expand/contract rule?

Back

Water expands when it freezes, unlike most substances that contract.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.