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Chem. 2 vocabulary
Chapter 2 Vocabulary
Question | Answer |
---|---|
Weight | A measure of the gravitational pull on matter |
Volume | The amount of space occupied by an object |
Density | The ratio of mass to volume,or mass divided by volume |
Accuracy | The closeness of measurements to the correct or accepted value of the quantity measured |
Precision | The closeness of a set of measurements of the same quantity made in the same way |
Percentage error | Calculated by substracting the accepted value from the experimental value |
Significant figure | A measurement consist of all the digits known with certainty plus one final digit, which is somewhat uncertain or is estimated |
Scientific notation | A method of expressing a quantity as a number multiplied by 10 to the appropriate power |