Post on 05-Jan-2016
States of Matter
Physical and Chemical Changes
Classifying Matter
Chemistry is the study of matter.
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Matter is anything that has mass and volume.
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•Solids•Liquids•Gases
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•Have a definite shape•Have a definite volume•Atoms close together and moving very slowly
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• Have an indefinite shape
• Have a definite volume
• Atoms not as close and moving quicker
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• Have an indefinite shape
• Have an indefinite volume
• Atoms spread apart and moving quickly
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At 100°C, water becomes water vapor, a gas. Molecules can move randomly over large distances.
Below 0°C, water solidifies to become ice. In the solid state, water molecules are held together in a rigid structure.
Between 0°C and 100 °C, water is a liquid. In the liquid state, water molecules are close together, but can move about freely.
•All matter can exist in all three phases depending on the TEMPERATURE.
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•To absorb heat means to add heat!
•To absorb heat means to add heat!
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To release heat means to cool or lose heat.
To release heat means to cool or lose heat.
The change of a solid to liquid is called…
MELTING
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The change of a liquid to a gas is called…
BOILING OR VAPORIZATION
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The change of a solid to a gas is called…
SUBLIMATION
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The change of a gas to a liquid is called…
CONDENSATION
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The change of a liquid to a solid is called…
FREEZING