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Chapter 1 Vocabulary
Terms 12-22
Term | Definition |
---|---|
weight | the measure of the force of gravity in a substance |
mass | the measure of how much matter is in a substance |
volume | the amount of space a substance takes up |
density | the measure of how much mass is in a given volume |
S.I. | the system of metric units used by scientists to measure the properties of matter |
atom | the smallest particle of an element |
molecule | the smallest unit of a compound, or a combination of two or more atoms |
chemical bond | the force that holds two atoms together |
ore | a rock that contains a metal or other economically useful element |
electrolysis | a process by which an electrical current breaks chemical bonds |
electrode | a metal strip used in electrolysis |