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Chemistry Vocabulary: Part 2

Chemistry Vocabulary: Part 2. Physical Properties. Can be observed or measured without changing the matter’s identity Adjective – descriptive word Examples Color Smell Size/Shape Texture/Taste Temperature Density State (Solid, Liquid, Gas). Chemical Properties.

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Chemistry Vocabulary: Part 2

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  1. Chemistry Vocabulary: Part 2

  2. Physical Properties • Can be observed or measured without changing the matter’s identity • Adjective – descriptive word • Examples • Color • Smell • Size/Shape • Texture/Taste • Temperature • Density • State (Solid, Liquid, Gas)

  3. Chemical Properties • Substance ability to participate in chemical reactions • Hard to observe • In order to see these you must change the substance into a new substance • Examples • Flammability • Reactivity

  4. Characteristic Properties • Chemical or physical property that is always the same no matter what size the sample is • Can be physical or chemical • Most useful type of property • Examples • Density • Flammability • Reactivity • Boiling Point, Melting Point, Freezing Point • Color • Smell

  5. Physical Changes • A change of matter from one form to another without a change in chemical properties • Usually reversible, no change to matter composition • End with the same thing you started with • Examples: • Ripping • Crushing • Cutting • Heating • Cooling • Coloring • All changes of state

  6. Chemical Changes • A change that occurs when one or more substances change into entirely new substances with different properties • Never reversible • End with something different than you started with • Examples: • Soured Milk • Burning • Digesting • Cooking/Baking • Rotting/Spoiling • Tarnishing

  7. Signs of a Chemical Change • Change in color • Change in temperature • Fizzing/Foaming • Sound or light being given off • New smell • New taste • Precipitate – when two liquids are mixed together and form a solid

  8. Endothermic • Energy is absorbed by a substance or substances

  9. Exothermic • Energy is released from a substance or substances

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