matter matter is anything that takes up space (or volume). everything has matter!
TRANSCRIPT
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MATTER
Matter is anything that takes up space (or volume).
Everything has MATTER!
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Matter exists in 3 ways:
SOLID
LIQUID
GAS
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1. Solid
A solid is matter in which the molecules are very close together and cannot move.
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Solids have definite shape and volume.
They always keep their own shape and always take up the same amount of space.
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2. Liquid
A liquid is matter in which the molecules are close together and move around slowly.
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Liquids have no definite shape. Liquids have definite volume. (Their shape
always changes, depending upon their container. However, the space they
occupy is always the same.)
Here, the liquid has taken the shape of the sink.
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3. GasA Gas is matter in which the molecules are widely separated, move around freely, and move at high speeds.
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Gases have no definite shape or volume.
Wind is gas.
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Which of these are SOLIDS, LIQUIDS, or GASES?
water
steamAir inside bubbles
chair
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Click and tell which of these are SOLIDS, LIQUIDS, or GASES?
AIR we breathe
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Click and tell which of these are SOLIDS, LIQUIDS, or GASES?
blood
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States of Water
Water is matter. It exists in three states- solid,
liquid, and gas.
WATER
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Water changes its states as it is heated or cooled.
HEAT causes water to change states from solid to liquid to gas. Here, heat is causing the ice to melt from the solid phase to a liquid phase.
COOLing causes water to change from gas to liquid to solid states.
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Ice is water when it is in its SOLID stage.
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Ice, snow, and frost are examples of water in the solid state. Liquid water
freezes at 0 degrees Celsius. Celsius is scale that
measures temperature. What instrument do you use
to measure temperature? Winter is a season that you
see a lot of solid water. Other examples of solid
water are ice cubes, icicles, ice on a skating rink.
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The ocean is an example of water in its liquid stage.
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Liquid water is found in many places. You see
liquid water coming out of the faucet,
when it rains, and running in a river.
Pure liquid water is free of salt, rocks, soil, and garbage.
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As water warms, it turns into a gas and goes up. It is made
of tiny water droplets called
“water vapor.” The water vapor forms clouds in the sky.
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What happens to water as it changes from a solid to a liquid to a gas?
The changes from a solid to a liquid to a gas or from a gas to a liquid to a solid are called phase changes. Water changes phases. Melting, freezing, condensation, and evaporation are examples of
phase changes. In a SOLID phase, the molecules are close together and do not move. In the LIQUID phase, the molecules move around and are a little more spread out. In the GAS state, the
molecules move around very quickly and spread apart as much as possible.
SOLID LIQUID GAS
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Water as a Gas
Look at this picture of gas
You don't see anything because gas is invisible. Water in the liquid state may change to water in the gas state. Water
evaporates to turn into a gas. Evaporate means to disappear. Gases are colorless and odorless. You cannot
see gas, but sometimes you can hear it and smell it. What are some ways that you can hear or smell a gas?
Water can evaporate or disappear with the help of heat. Water can evaporate from soil. It evaporates off wet clothes hanging on a clothesline. Plants release water
vapor into the air. We breathe out water vapor.
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TRY THIS!!!
1. Dry your hand with a towel. Feel your palm. Is it wet or dry?
2. Hold your hand in front of your mouth about 1 inch away from you. Breathe out slowly about 8 times on to the palm of your hand. Do not blow. When you are done, feel your palm. What does it feel like? Is it wet or dry?
Your palm should have felt wet to you. That moist feeling was water vapor. Remember that we breathe out water vapor. If you have a dog or a cat, you can feel the water vapor that they breathe out. Try this with a mirror. See the water droplets form on the mirror. The water vapor that you breathed out is now becoming liquid water on the mirror. Why?
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Click on the picture to link to a web site which shows how
water changes from the LIQUID to the GAS state and from the GAS to the LIQUID stage.
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Congratulations! You’ve completed the presentation about the
3 States of Matter