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Chapter 1 part 2
Matter and Measurements
definition | term |
---|---|
a substance that has a uniform chemical composition throughout. | pure substance |
a blend of two or more substances, each of which retains its chemical identity. | mixture |
a uniform mixture that has the same composition throughout. | homogeneous mixture |
a non-uniform mixture that has regions of different composition. | heterogeneous mixture |
a fundamental substance that cannot be broken down chemically into any simpler substance. | element |
a pure substance that can be broken down into simpler substances by chemical reactions. | chemical compound |
a starting substance that undergoes change during a chemical reaction. | reactant |
a substance formed as the result of a chemical reaction | product |
a process in which the identity and composition of one or more substances are changed. | chemical reaction |