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23 Cards in this Set
- Front
- Back
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physical properties |
Can be undone color, size, odor, texture, hardness, strength. Mass, volume, density |
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Chemical properties |
Can't be undone Not easy to observe ( rust, reaction, corrode, tarnish) |
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Reactivity |
ability to chemically combine with another substance |
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Flammability |
ability to burn |
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Things that show chemical reaction |
Sound, change in smell, fizzing, gasses given off, heat/cold, exothermic and endothermic, change in color, light is given off |
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Gas to liquid
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condensation |
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Liquid to gas |
Vaporization |
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Solid to liquid |
Melting |
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Liquid to solid |
Freezing |
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Solid to Gas |
Sublimation |
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Gas to Solid |
Crystallization |
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Chemistry |
The study of what things are made of |
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Atom |
the smallest unit of an object that contains all the properties of an element |
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Element |
substance that CANNOT be broken down by similar meaning |
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Compound |
Substance made of atoms of 2 or more different elements that are chemically combined |
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Chemical Formulas |
Combination of element symbols and number used to represent a substance |
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Molecules |
Atoms joined together Keeps all properties |
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N2 O2 H2 CL2 I2F 2Br 2 |
Diatomic Molecule |
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Pure substance |
A sample of matter that has fixed or definate chemical and physical properties, proportions re always the same |
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Mixtures |
Combination of 2 or more substances (Not chemically combined) |
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Heterogeneous Mixture |
Not mixed evenly |
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Homogeneous mixture |
evenly distributed |
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Matter |
made of atoms and molecules that act like tiny particles |
