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States of matter
Term | Definition |
---|---|
product | The compounds made during a chemical reaction |
reactant | The compounds going in to a chemical reaction |
physical change | when the end material and the beginning material are the same |
chemical reaction | when a different substance is the end product |
coefficient | the number BEFORE a molecule, example: 2 Cl, 7 Fe |
subscript | the little number after a chemical symbol |
solid | a substance with a definite volume but not a definite shape |
liquid | a substance with a definite volume but not a definite shape |
gas | a substance without a definite volume or a definite shape |
melting | when heat energy is added to change a solid to a liquid |
freezing | when heat energy is removed to change a liquid to a solid |
sublimation | when heat energy changes a solid directly into a gas |
deposition | when heat energy is removed changing a gas directly into a solid |
condensation | when heat energy is removed changing a gas into a liquid |
vaporization/evaporation | when heat energy is added changing a liquid into a gas |
At what temperature will liquid water change to a gas? | 100°C or 212°F |
At what temperature will liquid water become a solid? | 0°C or 32 degrees F |