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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Anything that has mass and takes up space |
Matter |
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The smallest unit of an element |
Atom |
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Proton |
Positive charge |
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Neutron |
No charge |
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Electron |
Negative charge |
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Atomic Number |
Number of protons |
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Atomic mass |
Sum of protons and neutrons |
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Isotope |
Two or more atoms of an element that differ in the number of neutrons (13C, 12C, 14C) |
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Energy |
The capacity to do work |
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Ion |
Charged atom or molecule |
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Cation |
Atom with a net + charge |
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Anion |
Atom with a net - charge |
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Valence Shell |
Directs how atoms interact |
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Full Valence means the atom is ___. |
Inert |
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Incomplete Valence means the atom is ____. |
Reactive |
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Reduction |
Reaction to gain electrons |
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Oxidation |
Reaction to lose electrons |
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Electrons in motion create ___. |
Current |
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A substance that cannot be broken down. |
Element |
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Substance made up of two or more elements in a fixed ratio. |
Compound |
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Ionic Bond |
Bond formed between a cation and an anion |
Ex. Table salt |
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Covalent Bond |
Bond that results from the sharing of electrons |
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Polar Covalent Bond |
Results from unequal sharing of electrons |
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Substance that speeds up a reaction without being used up in the reaction |
Catalyst |
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Properties of Water |
1. Cohesion/Adhesion 2. Moderation of temperature 3. Insulation of water by ice |
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pH |
Potential for hydrogen |
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Acid |
Substance that increases the pH of a solution |
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Base |
A substance that decreases pH of a solution |
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Buffer |
Substance that minimizes changes in pH |
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