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| anything that takes up space and has volume; substance |
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| the basic unit of the element |
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| part of an atom that contains protons and neutrons |
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| part of an atom that contains electrons |
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| has a positive charge and a mass of 1 |
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| has no charge and a mass of 1 |
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| Part of atom that always stays the same: proton, neutron, or electron |
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| the number of protons is equal to this |
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| Do protons and neutrons have mass, weight, or both? |
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| Equals the number of protons plus the number of neutrons |
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| Can the number of protons change? |
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| Can the number of neutrons change? |
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| an atom with an unequal amount of neutrons and protons |
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| part of an atom that has a negative charge and no mass |
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| The formula used to figure out the maximum number of electrons for an energy level |
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| rule that states once an atom's outer energy level has 8 electrons, it thinks it is full |
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| atoms with incomplete outer energy levels |
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| this happens when an atom strives to fill its outer level |
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| when an atom loses an electron |
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| when an atom gains an electron |
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| a positively charged atom |
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| ions in our body are called... |
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| formed when atoms bond together |
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| the name for a molecule composed of different types of atoms |
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| bond based on the loss or gain of electrons |
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| bond that is strong, but easily broken by water |
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| bond formed because of ions of opposite charges are attracted to one another |
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| bond formed when 2 or more atoms share pairs of electrons |
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| bond that is strong and not broken by water |
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| bond in which atoms can share 1, 2, or 3 pairs of electrons |
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| type of covalent bond that shares electrons equally |
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| type of covalent bond in which electrons are more attracted to one atom than another |
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| H2, C2, N2, these are examples of the... |
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| H-H, O=O, these are examples of the... |
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| bond that is the weakest and easily broken |
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| bond in which a weak positve charge of H or N is attracted to a weak negative charge of O |
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| Where is this bond found? H+...OH- |
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| Where is this bond found? H+...N- |
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| specific type of bond which is based on the sharing of electrons with the electrons more attracted to one atom than the other |
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| Water is an effective ____ because it can form hydrogen bonds. |
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| Water clings to polar molecules causing them to be ___. |
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| molecules that are attracted to water |
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| molecules that are repelled by water |
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| term used when water breaks apart into a H+ and a OH- |
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| measures the H+ concentration in a solution |
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| on the pH scale, 14 is... |
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| these break apart in water to produce H+ |
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| these break apart in water to make OH- |
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| act as a reservoir for H+ |
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| how much stronger or weaker is the acid or base on the pH scale for every number increased or decreased |
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