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16 Cards in this Set
- Front
- Back
Absolute Zero |
The lowest possible temperature (-273.15° C) |
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Atmospheric Pressure |
The pressure exerted by the gases in the air. Units of measurement are: kilopascals (kPa), atmospheres (atm), millimeters of mercury (mm Hg), and Torr Standard atmospheric pressure is: 100 kPa, 1 atm, 760 mm Hg, and 760 Torr. |
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Atom |
The smallest particle of an element; a nucleus and its surrounding electrons. |
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Atomic Mass |
The mass of an atom measured in atomic mass units (amu). Atomic mass is now more generally used instead of atomic weight. |
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Atomic Number |
Awesome known as proton number, it if the number of electrons or the number of protons in an atom. |
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Atomic Weight |
A common term used to mean the average molar mass of an element. This is the mass per mole of atoms. |
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Boiling Point |
The temperature at which a substance undergoes a phase change from a liquid to a gas. |
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Celsius Scale (C°) |
A temperature scale on which the freezing point of water is at 0゚ and the normal boiling point at standard atmosphere pressure is 100°. |
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Change of State |
A change between two of the 3 states of matter: solid, liquid and gas. |
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Compound |
A chemical consisting of two or more elements chemically bonded together. |
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Condensation |
The formation of a liquid from a gas. This is a change of state, also called a phase change. |
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Conduction |
1. The exchange of heat (heat conduction) by contact with another object 2. Allowing the fow of electrons (electrical conduction) |
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Convection |
The exchange of heat energy with the surroundings produced by the flow of a fluid due to being heated or cooled. |
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Decay (Radioactive Decay) |
The way that a radioactive element changes into another element due to loss of mass through radiation. |
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Density |
The mass per unit volume |
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Diffusion |
The slow mixing of one substance with another until the 2 substances are evenly mixed. Mixing occurs because of differences in concentration within the mixture. Diffusion works rapidly with gasses, very slowly with liquids. |