P3. Particle Model

Gold is a dense solid. What does this mean?

• It is hard

• It is heavy

• It is heavier than other things of the same size

• It is malleable

What is the equation for density?

• Density = mass x volume

• Density = weight x volume

• Density = volume / mass

• Density = mass / volume

True or False: Solids are always more dense than liquids.

• True

• False

True or False: The tomato in the image is more dense than water

• True

• False

True or False: More dense things tend have more particles closer together.

• True

• False

Which of these is false about solids

• Particles move about fixed positions

• Solids can easily change shape

• Solids have fixed volumes

• Solids cannot flow

The internal energy of a substance is...

• the movement of particles

• the average kinetic energy of the particles

• the average kinetic and potential energy of the particles

• the average potential energy of the particles

Specific Heat capacity is...

• how hot something is

• how hot something can get

• how much energy it takes to increase the temperature of something

• the total amount of energy an object has

Specific latent heat is...

• The amount of energy it takes to change the state of a substance

• The amount of energy it takes to increase the temperature of a substance

• the amount of energy a substance has

• how hot a substance can get

Carbon dioxide and iodine can sublimate. What does this mean?

• It is only a gas

• It can go straight from solid to gas without becoming a liquid

• It is only a solid

• It can be all three states at the same time.