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States of Matter. 1. Develop a rule for each category . This rule should explain why each item is in that category. Hint : figure out what all items in a category have in common. Testers. 2. Write down each of the following and decide which category they would be in based on your rule.

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states of matter
States of Matter

1. Develop a rule for each category. This rule should explain why each item is in that category. Hint: figure out what all items in a category have in common.


2. Write down each of the following and decide which category they would be in based on your rule.

  • Bottled perfume
  • Marble
  • Coffee
  • Air
  • Concrete
  • Hydrogen
states of matter1
  • Matter can be classified into groups based on the shape and volume of their moving particles
    • SOLID
    • LIQUID
    • GAS
    • PLASMA
SOLID - state of matter when materials have definite shape anddefinite volume
    • Atoms are packed tightly together
    • Atoms are arranged neatly, orderly
    • Atoms vibrate around the same location
examples of solids are
Examples of Solids are
  • Ice
  • Frog
  • Cheese
  • Bricks
  • Wood
  • Popcscle
Liquid- state of matter when materials have definite volume andindefinite shape
    • Liquid takes the same shape as its container
    • Particles FLOW past one another easily
    • Atoms are close, but not tight
    • Atoms are randomly arranged
examples of liquids are
Examples of Liquids are
  • Orange Juice
  • Water
  • Soft drinks
  • Milk
  • Rubbing Alcohol
  • Vinegar
Gas – state of matter when materials have indefinite shape AND indefinite volume
    • Take shape and volume of container
    • Atoms spread to fit container
    • Atoms move rapidly, constantly
    • Atoms randomly arranged with large spaces between them
examples of gases are
Examples of Gases are
  • Steam
  • Oxygen
  • Carbon dioxide
  • Smog
  • Tear Gas
  • Helium
Plasma – state of matter made up of small electrically charged particles
    • Found where there is high temperature and pressure
    • Rare to find on Earth
    • Ex, lightning
    • Used in fluorescent light bulbs and neon lights
  • Kinetic Energy (KE) - energy of motion
  • Higher KE = Higher Temperature
    • All matter is made of millions of tiny particles
    • these particles are constantly moving, and have KE
Phase Change - reversible physical change from one state to another
  • heat energy is absorbed or released
add or subtract energy

When energy is added, particles move faster!

When energy is taken away, particles move slower!

Add or Subtract Energy. . .
Melting – changing from solid to liquid
    • When a solid gains heat
    • Temperature and energy INCREASE
Freezing –changing from liquid to solid
    • When a liquid loses heat
    • Baked cookies are actually FROZEN because they are solid.
    • Freezing does not always mean COLD.
    • Freezing point and melting point are the same temperature
Evaporation –changing from a liquid to a gas
    • Only liquid touching air evaporates
    • Temperature is below boiling point
    • Water VAPOR or STEAM = gas
    • More area = faster evaporation
Vaporization (boiling) – Change of liquid to a gas- when vapor pressure is the same as atmospheric pressure and bubbling occurs
    • Vapor pressure - pressure created by moving gas particles bumping into each other or the container
    • Atmospheric pressure – pressure outside the container
Condensation –change from gas to liquid
    • Water vapor particles hit a cool surface, lose heat, and change into water
  • Sublimation-change from solid to gas
    • Dry ice

Red = heating

Blue = cooling



thermal expansion and contraction
Thermal Expansion and Contraction
  • Tendency of matter to expand or contract as a result of changes in temperature.
  • Typically: when heat is added, matter expands and when heat is removed matter contracts.
  • Expand: Get larger
  • Contract: Get smaller
starter 11 7
Starter 11/7
  • Determine what characteristics the “Yes” examples share. Write a list.
part 2
Part 2
  • Write down the following list and decide whether they are “Yes” or “No”
  • Sugar is used by the body to produce energy
  • Snow changes to water vapor
  • Sugar dissolves in water
  • Salt water evaporates to dryness
  • Wood burns in a campfire
  • “Crazy Glue” hardens when exposed to air
after reading was it a chemical change
After reading “Was it a Chemical Change”
  • Flip the paper over and answer these questions:
  • Summarize the article in 3 or more sentences
  • Create a list of the indicators (how you know) a chemical change occurred
  • What do you think catalysts are?Write where you got that information (the actual words)
  • Explain the difference between a chemical and physical change. How can you separate substances that have been chemically changed?