Ch.1: Matter and Change. 1.1 Chemistry. Chemistry. study of matter and the changes it undergoes chemists use instruments to improve their ability to observe and make measurements. Chemistry. chemists work with chemicals (any substance with definite composition)
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Ch.1: Matter and Change
Physical- characteristics that can be observed or measured without changing the identity of a substance
Chemical- relates to a substances ability to undergo changes that transform it into a different substance
Easiest to see when a chemical is reacting