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16 Cards in this Set
- Front
- Back
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Chemistry |
Study substances and rules that govern their behavior. |
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Matter |
Anything that occupies space and has mass. |
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Element |
Pure substance that cannot be further broken down. |
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Atom |
Smallest. |
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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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Ion |
Unequal Charge.
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Ionic Bond |
When two atoms join together because one has less of a charge than the other one or one has a higher charge than the other one. |
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Covalent Bond |
When two atoms join together to become stronger (not just because they need each other).
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Molecule |
A group of two or more atoms linked together by sharing electrons in a chemical bond. |
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Molecular Formula |
A chemical formula that shows the number and kinds of atoms in a molecule. |
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Structural Formula |
A chemical formula that shows the number and kinds of atoms in a molecule and how the atoms and bonds in the molecule are arranged. |
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Chemical Change |
A usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance. |
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Physical Change |
A usually reversible change in the physical properties of a substance, as size or shape. |
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Mixture |
A composition of two or more substances that are not chemically combined with each other and are capable of being separated. |
