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Chemistry
Unit Review: vocab
| Term | Definition |
|---|---|
| Precision | Description of how close a set of measurements are to one another. |
| accuracy | Description of how close a single measurement is to the accepted value (the truth). |
| absolute zero | A "temperature" of 0 K. No sample of matter has been measured at this temp. yet |
| significant figures | a systematic way to communicate the level of ceertainty in a measurement. "how certain" |
| measurement | a quantity that has both a number and a unit. |
| weight | a measurement of the effect of the gravitational force on an object. |
| mass | the (amount of matter) present in an object or sample, often measured in grams. |
| international systems of units | si |
| error | =experimental value-accepted value |
| percent error | a way to tell how a measurement error relates to the size/ scale of what is being measured. |
| scientific notation | a coefficient multiplied by an integer power of 10. |
| temperature | a measure of how hot or cold an object is. |
| conversion factor | a ratio of equal measurements, each having a different unit, based on a fact- used to convert from one unit to another unit. |
| density | the ratio of the mass of an object to its volume. |
| dimensional analysis | a systematic way to convert the units on a measurement from one unit to another. |
Created by:
kaitlinschmitt
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