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22 Cards in this Set
- Front
- Back
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scientific method
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observations ---> Qualitative or Quantitative-----> form a hypothesis ---> experiment to test the hypothesis
---> analyze the collected data ---> come to a conclusion---> if right you're done, if wrong go back to form another hypothesis |
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system
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a specific portion of matter in a given region of space that has been selected for studying during an experiment or observation
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qualitative observations
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no numbers
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quantitative observations
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involve numbers
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hypothesis
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an educated guess or testable statement
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data
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a collection of observations you use to draw conclusions and you use it as evidence
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variables
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the portion of the experiment that is changed; only one variable should be in each experiment
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independent variable
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the variable that the experimenter can manipulate
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dependent variable
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the outcome depends on the independent variable
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control
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the portion of the experiement that is held constant throughout the experiment to ensure that you are only testing the variable
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conclusion
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what you come to
at the end of the experiment |
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model
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more than a physical object; often an explanation of how phenomena occur and how data or events are related
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theory
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a broad generalization that explains a body of facts or phenomena
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Density
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d=m/v
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mass
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m=dv
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volume
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v=m/d
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volume of a cylinder
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Pi x radius-squared x height
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percent error
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percent error= experimental value-accepted value/accepted value x 100
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direct proportions
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y=kx, straight line going through the origin
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indirect proportions
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y=k/x, hyperbola
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1 L is equivalent to
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1 dm cubed
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1 mL is equivalent to
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1 cm cubed
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