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| composition not uniform; different types of particles visually discernable |
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| composition uniform; particles only distinguishable at nano-scale |
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| transfer of electons (e.g. NaCl) |
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| Sharing of electrons (e.g. H2O) |
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| involes chemical properties (e.g. rust) |
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| involves only physical, constant properties (e.g. carving wood) |
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| Water is liquid at room temperature because of… |
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| extensive hydrogen bonding between water molecules |
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| If a system is at equilibrium and is disturbed, it will adjust to reestablish a new equilibrium position. For chemical reactions, this implies that the concentrations of reactants and products will change so that a new equilibrium is established. |
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| Ionic bonds are interactions that result from the electrostatic interactions of positive and negative ions that result from the transfer of electrons. |
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| Intermolecular forces that exist between molecules that have H bonded to N, O, or F. |
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| How much energy is required to keep your body going |
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| Reaction that occurs between an acid and a base and which usually results in the formation of water and a salt |
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| When acid is added, CO32- will react to form HCO3-. Whan base is added, HCO3- will react to for CO32-. |
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| Study of matter/changes it can undergo |
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| Two things that drive chemical reactions |
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