Particle theory and states of matter

Particle theory and states of matter

Multiple Choice

Which image shows particles in a solid?

Multiple Choice

Which image shows particles in a liquid?

Multiple Choice

Which image shows particles in a gas?

Multiple Choice

When heated, a substance expands and its density...

• Increases

• Stays the same

• Decreases

• Fluctuates

Multiple Choice

A phase change from liquid to gas is called ...

• condensation

• evaporation

• sublimation

• deposition

Multiple Choice

What happens to a substance when it changes from a liquid to a solid?

• it gains mass
• it gains energy
• it loses mass
• it loses energy

Multiple Choice

If you want to change liquid water into a gas you must:

• remove heat from the water
• apply pressure to the water
• add heat to the water
• add chemicals to the water

Multiple Choice

When a substance is heated, particles will

• Move further apart

• Get larger

• Move closer together

• Be unaffected

Diffusion (High to low concentration)

• A gas is released (high concentration).

• Particles want to reach equallibrium (everything is equal).

• So the particles cover the room evenly, the concentration then becomes low.

• (Spray deodorant in one corner of the room, walk to the opposite side and see how long the smell takes to reach you)

Gas pressure

• Pressure is caused when particles hit the wall of their container.

• Reducing the container size, adding particles and adding heat all result in higher pressure.

• Cooler temperature, a larger space and fewer particles results in lower pressure

Multiple Choice

The pressure of the gas in the balloon in the ice water will be:

• Greater than that of the balloon in the boiling water.

• Less than that of the balloon in the boiling water.

• The same as that of the balloon in the boiling water.

• Not enough information to answer the statement.

Multiple Choice

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• The pressure will decrease

• The pressure will remain constant

• The pressure will equalize

Multiple Choice

How can we increase the gas pressure inside a sealed container?

• Increase the number of particles inside the container
• Increase the temperature
• Decrease the volume of the container
• All of these