Lab: Penny Density
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Last updated 22 days ago
11 questions
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Background information:
In the laboratory, accuracy refers to how close a measured value is to an accepted value. Precisionrefers to how close a series of measurements are to one another. In the example below, hitting the center target is accurate (accepted goal/value).
In an experiment, the independent variableis the variable that you change. The data collected or value that changes in response to a change in the independent variable is called the dependent variable. It is valuable to have a control, a standard for comparison, in experiments.
Physical properties can be measured without changing a substance’s chemical identity or composition. Extensive properties are physical properties that depend on the amount of matter being measured, example length. Intensive properties are physical properties that are independent of amount, they can be measured without changing a substance’s chemical identity, such as color.
