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8 Cards in this Set
- Front
- Back
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atom
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the smallest unit of matter that cannot be broken down by chemical means. different from a cell!
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chemical bond
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an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. examples include: hydrogen bond, ionic bonds and covalent bonds.
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compound
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a substance made of joined atoms of two or more different elements.
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element
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a pure substance made of only one kind of atom. examples are seen on the periodic table.
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hydrogen bond
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a weak chemical attraction between polar molecules. polar molecules are molecules with an unequal distribution of electrical charges
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matter
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is anything that has mass and takes up space
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covalent bond
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form when two or more atoms share electrons to form a molecule.
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molecule
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a group of atoms held together by covalent bonds
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