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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 |