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2010 vocab, #1

chemistry, chapter one, vocabulary list one

Scientific method a method of research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.
Hypothesis An educated guess.
Independent variable a variable in a functional relation whose value determines the value or values of other variables, as x in the relation y = 3 x 2.
Dependent variable the event studied and expected to change when the independent variable is changed.
Experimental control the object you experiment on.
Density the state or quality of being dense; compactness; closely set or crowded condition.
Percent error % error=measured value-accepted value/ accepted value*100
Significant figures all the nonzero digits of a number and the zeros that are included between them or that are final zeros and signify accuracy: The significant digits of 0.01230 are 1, 2, 3, and the final 0, which signifies accuracy to five places.
Created by: bzyla