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chem unit 1

chem midterm

TermDefinition
why do we study chemistry? seek truth, serve others, steward creation
how do we study chemistry? Scientific Method
chemistry the study of matter, its interactions and changes
matter made up of tiny particles called atoms
molecules atoms chemically bonded together
mixtures substances physically mixed together
compounds atoms of different elements bonded together
chemical change a change in a chemical substance; usually not reversible
physical change chemical substance does not change; usually reversible
evidence of a chemical change bubbles forming, changes in color, texture or smell, solid forming, or energy being released
accuracy a measure of the correctness of a value
precision a measure of the exactness of a value or how close the values are to each other
homogenous mixture same composition throughout
heterogenous mixture has a different composition throughout
Created by: elenarrogers
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