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Unit 1


CHEMISTRY study of matter and the changes that it undergoes
SUBSTANCE matter that has a definite and uniform composition
MASS a measurement that reflects the amount of matter
WEIGHT measure not only of the amount of matter but also of the effect of Earth's gravitational pull on that matter
MODEL visual, verbal, or mechanical explanation of experimental data
SCIENTIFIC METHOD systematic approach used in scientific study
QUALITIVE DATA information that descries color, odor, shape, or other physical characteristics
QUANTITIVE DATA information that describes temp, pressure, volume, the quantity of a chemical formed, or how much of a chemical is used up in a reaction
HYPOTHESIS tentative, testable statement or prediction about what has been observed
EXPERIMENT set of controlled observations that test the hypothesis
INDEPENDENT VARIABLE variable you plan to change
DEPENDENT VARIABLE value changes in response to a change of the independent variable
CONTROL standard for comparison
CONCLUSION judgment based on the information obtained
THEORY explanation of a natural phenomenon based on many observations and investigations over time
SCIENTIFIC LAW relationship in nature that's supported b many experiments
PURE RESEARCH something that a scientist does to gain knowledge for the sake of knowledge itself
APPLIED RESEARCH research undertaken to solve a specific problem
Created by: catelyn.orendi