Phase Changes

Unit #1: What’s a MATTER?
Match
This
Does not change based on location
Matter Mass Weight -
Changes on location
Used to measure the amount of “stuff”
an object has
Anything that has “mass” or “stuff” and
takes up space
The measure of the force of gravity
The amount of “stuff” or “Matter” in an
object
Matter
Anything that has “stuff” and takes up space
Mass
The amount of “stuff” or “Matter” in an object
Does NOT change based on location
Weight
The measure of the force of gravity
Changes based on location – Gravity Changes
Used to measure the amount of “stuff” an object has
30
lbs.
185
lbs.
65
lbs.
States of Matter
• Solid
• Liquid
• Gas
Definite
Shape
Yes/No
Solid
Liq.
Gas
Definite
Volume
or Space
Yes/No
How
Compressible
high, medium,
Low, no
Atom
Arrangement
close, med or
far apart
Kinetic
Energy
high, med.
low
States of Matter Song
Phase Changes
• Solid → liquid • Melting
• endothermic
• Liquid → gas
• Evaporation/vaporization
• endothermic
• Gas → Liquid
• Condensation
• exothermic
• Liquid → solid • Freezing
• exothermic
• Solid → gas
• endothermic
• sublimation
Unit #1: Introduction to Matter
States of Matter and Phase Changes
• Draw Three (3) Boxes equally spaced across your paper like
so:
Unit #1: Introduction to Matter
States of Matter and Phase Changes
• Label the Left Box as "Solid", the Middle Box as "Liquid",
and the Right Box as "Gas"
SOLID
LIQUID
GAS
Unit #1 States of Matter and Phase
Changes
• Draw what the particles would look like inside each of the
three different States of Matter.
SOLID
LIQUID
GAS
Unit #1 States of Matter and Phase
Changes
• Identify whether each state of matter has a Definite Shape
or No Definite Shape.
SOLID
• Definite
Shape
LIQUID
GAS
• No Definite
Shape
• No Definite
Shape
Unit #1 States of Matter and Phase
Changes
• Identify the "amount" of Kinetic Energy (KE) that each state
of matter exhibits.
SOLID
• Definite
Shape
• Low KE
LIQUID
GAS
• No Definite
Shape
• Medium KE
• No Definite
Shape
• High KE
Unit #1 States of Matter and Phase
Changes
• Identify the names of the different Phase Changes.
Sublimation
SOLID
Melting
Freezing
Deposition/
De-sublimation
LIQUID
Evaporation
Condensation
GAS

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