8.2 The Particle Model [mastery check]

The kinetic particle model of matter states that ...........

• All matter is made up of one solid mass

• All matter is made up of tiny particles

The kinetic particle model states that...

• The particles of matter are not moving

• The particles of matter are in constant random motion

Brownian motion is ........

• random motion of microscopic particles caused by collision with molecules in a fluid that are too small to see

• Systematic movement of particles in a straight line

• Vibrational motion of particles due to thermal energy

The kinetic particle model of matter states that .......

• An increase in temperature results in an increase in the average kinetic energy of particles

• An increase in temperature results in a decrease in the average kinetic energy of particles

• Temperature does not affect the average kinetic energy of particles

When we increase the kinetic energy of particles we also increase their .............?

• mass

• temperature

• size

• area

When a substance is getting hotter, which internal energy store is increasing?

• gravitational

• potential

• kinetic

• elastic

In a solid, ___________________. (Select all that apply).

• Particles are packed closely together

• Particles are arranged in a regular pattern

• Particles vibrate about a fixed positions

• Particles slide across one another

• There are strong forces of attraction between particles.

Particles of all matter are in constant random motion.

• True
• False

The particles of liquids ______________ (select all that apply)

• vibrate about their fixed postions

• are able to slide over each other

• move about freely at high speeds and in random direction

• are randomly arranged

Arrange the strength of the forces of attraction between the particles of solids, liquids and gases from the strongest to weakest

• (strongest) gases > liquids > solids (weakest)

• (strongest) solids > liquids > gases (weakest)

• (strongest) gases > solids > liquids (weakest)

• (strongest) solids > gases > liquids (weakest)