physics 2.A

Macroscopic

Can be seen without help

Microscopic

Can’t bee seen without a help

Solid has-

A lot of bonds

Liquid/gas has-

Some bonds

Particle

Very small piece of matter ( atom, molecule, pollen)

Brownian motion

The random motion of particles

When gas heated, particles

Moving faster

More kinetic

energy more collisions

Kinetic energy transferred from particle to particle when

Particles collide

Thermal energy is greater if

Temp increases or # of particles increases

Heat

The flow of the thermal energy from one object to another

Thermal energy measures..

TOTAL KINETIC ENERGY OF ALL PARTICLES

DEPENDS ON THE MASS

Temperature

AVERAGE KE OF AN INDIVIDUAL PARTICLE

DEPENDS ONLY ON THE SPEED

Absolute zero

The coldest possible temperature there particles don’t move

Conductor

Thermal energy tranfared easily

Isolator

Kinetic energy do not transferred easily