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1. WHAT IS MATTER?
Matter is anything that :Has mass
Has volume (takes up space)
LIST 5 things that are MATTER
LIST 5 THINGS THAT ARE N
OT M
ATTER
HOW CAN MATTER BE IDENTIFIED? Matter can be identified by:
Physical properties- what you can observe without changing the matter
• color, texture, density, melting point, conductivity, odor
Chemical properties- how matter interacts with other matter and changes into something new
• reactivity,
WHAT ARE SOME PHYSICAL PROPERTIES?Density
color
odor
phase
Physical properties can be observed without
changing what the substance is
1.WHAT ARE SOME PROPERTIES OF SOLIDS
definite shape , definite volumeParticles move slowly and are strongly attracted to each other
Particles can only vibrate in place
2. WHAT ARE SOME PROPERTIES OF LIQUIDS?
definite volume but no definite shape,
takes the shape of its container
Particles move faster and are weakly attracted to each other.
Particles are able to slide past one another (flow)
SPECIAL PROPERTIES OF LIQUIDS:
Viscosity- resistance to flowing,
Thick liquids (like honey) have a
high viscosity and do not flow easily
3: WHAT ARE SOME PROPERTIES OF GASES?no definite shape and no definite volume- expand to fill container
Particles move very fast and are very weakly attracted to each other
Gases are free flowing
4. WHAT THE HECK IS PLASMA?
Most common state of matter in the universe
Found in :stars (including our sun), jet engines,
Lightning, nuclear reactor cores, Aurora (northern and southern lights)
PLASMA EXAMPLES
Properties of Plasma:
Very hot
very low density
Electrons have separated from their nucleus and orbit more randomly
WHAT ARE PHASE CHANGES?
A change of phase or state is a physical change. No new substance is created.
Caused by adding or removing energy
Temperature- a measure of the average
speed of the particles of a substance
WHAT HAPPENS WHEN A SUBSTANCE GAINS ENERGY? a. Speed of particles
increases b. Temp. increases c. Vol. increases
d. Substance may change to higher energy state
WHAT HAPPENS WHEN A SUBSTANCE LOSES ENERGY?
a. Speed of particles decreases
b. Temp. decreases
c. Vol. decreases
d. Substance may change to lower-energy phase
PHASE CHANGE TEMP. OF SOME SUBSTANCES
substance Melting point(Celsius)
Boiling point(celsius)
water 0 100
ethanol -117 79
propane -190 -42
Table salt 801 1,465
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