Transcript States of Matter

Review: States of Matter,
Thermal Energy & Energy
Transfer
Matter

Matter – anything that has mass and
takes up space

Everything around us
Four States of Matter

Solids

particles vibrate but can’t move
around

fixed shape

fixed volume

incompressible
Four States of Matter

Liquids

particles can move
around but are still close
together

variable shape

fixed volume

virtually incompressible
Four States of Matter

Gases
particles can separate and
move throughout container
 variable shape
 variable volume
 easily compressed
 vapor = gaseous state of a
substance that is a liquid or
solid at room temperature

Four States of Matter

Plasma

particles collide with enough energy
to break into charged particles (+/-)

gas-like, variable
shape & volume

stars, fluorescent
light bulbs, TV tubes
Energy & Temperature
Energy is the ability to do work or
produce heat.
 Temperature is a measure of the
random motions (kinetic energy) of
the components of a substance

Fast
Slow
Hot water
Cold water
Temperature & Heat

Heat transfer is a flow of energy between two
objects due to a temperature difference between
the objects.
o
Heat transfer is the way in which thermal energy is
moved from a hot object to a colder object.
Hot water
(90. oC)
Cold water
(10. oC)
Water
(50. oC)
Water
(50. oC)
Heat Transfer
Cup gets cooler while
hand gets warmer

Heat always flows
from warmer to
cooler objects.
Ice gets warmer while
hand gets cooler
Types of Energy
Mechanical energy- due to a object’s
motion
 Electrical energy- caused by
movements of electrons
 Chemical energy- that is available for
release from chemical reactions

Quiz Time

What type of energy is shown below?
Quiz Time

What type of energy is shown below?