States of Matter

Why does a substance change from one state of matter to another?

• The substance’s size changes.

• The substance’s temperature and energy changes.

• The substance turns into a different kind of matter.

The particles in a gas are very ____________________ packed together.

• shapely

• tightly

• loosely

What property of plastic makes it a good choice for the pot handle?

• it is conductive
• it is not conductive
• solubility
• density

The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.

• solid
• liquid
• gas
• plasma

What happens to the particles in a liquid when it is cooled and becomes a solid?

• The particles move faster and spread out.

• The particles slow down and pack closely together.

• The particles disappear.

a. The steam makes Mom’s kitchen window look cloudy. Why?

• it is turning from a gas back to a liquid

• it is turning from a liquid to a solid

• it is turning from a liquid to a gas

A gas typically consists of:

• low energy particles that experience high attractive forces between them.

• low energy particles that experience no attractive forces between them.

• high energy particles that experience high attractive forces between them.

• high energy particles that experience little attractive force between them

According to Boyle's Law if the temperature is constant, the pressure is increased, the volume __________

What are the two types of solids?

• Crystalline solids and Molecular solids

• Suspension Solids and Amorphous solids

• Butter and Eraser

• Crystalline solids and Amorphous solids

What is 50 C in Kelvin?

• 223
• 323
• 100
• 50