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KMHS_Chemistry
Chapter 2 Vocabulary: Scientific Measurement
Question | Answer |
---|---|
Accuracy | The closeness of a measurement to the true value of what is being measured. |
Accepted Value | A quantity used by general agreement of the scientific community. |
Density | The ratio of the mass of an object to its volume. |
Experimental Value | The quantitative result of an experimental measurement. |
Percent Error | |accepted value - experimental value| / accepted value x 100 |
Precision | The reproducibility, under the same conditions, of a measurement. |
Qualitative Measurement | A measurement which gives descriptive, nonnumeric results. |
Quantitative Measurement | A measurement which gives definite, usually numeric results. |
Scientific Notation | Expression of numbers in the form N x 10^n where N is equal to or greater than 1 and less than 10 and n is an integer. |
Significant Figures | All the digits that can be known precisely in a measurement, plus a last estimated digit. |