Solids, Liquids and Gases

Front

What type of solids melt at a specific temperature?

Back

Crystalline solids melt at a specific temperature.

Front

What is surface tension?

Back

Surface tension is an inward force among the molecules in a liquid that brings the molecules on the surface closer, allowing insects like water striders to walk on the surface of a pond.

Front

What do lines AB and CD represent in a phase change diagram?

Back

Lines AB and CD represent a change of state.

Front

How are the particles of amorphous solids arranged?

Back

The particles of amorphous solids, like plastics, are arranged in no regular pattern.

Front

What does a directly proportional relationship mean?

Back

A directly proportional relationship means that as one variable changes, the other changes in the same capacity or way.

Front

What are the three states of matter?

Back

The three states of matter are solids, liquids, and gases.

Front

How do particles behave in a solid?

Back

In a solid, particles are closely packed together and vibrate in place.

Front

What is viscosity?

Back

Viscosity is a measure of a fluid's resistance to flow.

Front

What happens to the particles in a liquid when heated?

Back

When a liquid is heated, its particles gain energy and move faster, which can lead to a change of state.

Front

What is the difference between crystalline and amorphous solids?

Back

Crystalline solids have a regular, repeating pattern of particles, while amorphous solids do not have a regular arrangement.