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Chmistry test 5-2
Scientific Method
Question | Answer |
---|---|
a logical approach to solving problems that lend themselvs to investigation | the scientific method |
step of the scientific method where you should write it as a question r in precise terms | define the problem |
find out everything that is known about the problem; inclues observations, research, investigating other experiments | gather information |
usually states as "cause and effect", must be testable with an experiment | form a hypothesis |
a factor that changes in an experiment | variable |
the factor that is manipulated or changed directly by the experimenter | independent variable |
factor or factors that change in response to the independent variable | dependent variable |
used as a standard for comparison. used to show that the results of the experiment are due to the independent variable | control |
those factors which remain the same in the experimental group and the control group and do not affect the test | constant |
observations and measurements collected during an experiment | data |
descriptive data is ____ | qualitative |
numerical data is ____ | quantitative |
may be visual, verbal, or mathematical | models |
broad generalization that explains a body of phenomena | theory |
independent variable is graphed on the ___ axis | x |
dependent variable is graphed on the __ axis | y |