The Particle Model of Matter

What is matter?

• Anything that takes up space and has mass

• Only solid objects

• Only liquids

• Only gases

Which of the following is a characteristic of solids?

• Indefinite shape

• Definite (fixed) shape

• Particles far apart

• Indefinite volume

How do particles in a liquid behave?

• Tightly packed and vibrate in place

• Far apart and move freely

• Somewhat close together and slide past each other

• Fixed in one position

What is a key characteristic of gases?

• Definite shape and volume

• Indefinite shape and volume

• Particles tightly packed

• Particles vibrate in place

What does an object's mass measure?

• The amount of space it takes up

• How tightly packed the matter is

• How much matter an object contains

• How easily an object can be squeezed

Which of the following describes volume?

• How much matter an object contains

• The amount of space an object takes up

• How tightly packed the matter is

• How easily an object can be squeezed

What is a key characteristic of particles in the particle model of matter?

• Particles are always stationary

• Particles have no spaces between them

• Particles are always moving

• Particles repel each other

How is density defined in the context of physical properties of matter?

• The amount of space an object takes up

• How tightly packed the matter is in an object

• How much matter an object contains

• How easily an object can be squeezed

What does compressibility refer to in physical properties of matter?

• How much matter an object contains

• The amount of space an object takes up

• How easily an object can be squeezed or pressed

• How tightly packed the matter is

Which FOUR statements make up the Particle Model of Matter? (Select the four that apply).

• All matter is made up of small particles

• Particles of matter are always moving

• Particles repel each other (push each other away)

• Particles attract each other

• Particles of matter have spaces between them