| A | B |
|---|
| density | the ratio of the mass of an object to its volume |
| accuracy | closeness of a measurement to the true value |
| kilogram | the mass of 1 L of water at 4°C |
| error | difference between the experimental value and the accepted value |
| temperature | the degree of hotness or coldness of an object |
| meter | the SI base unit of length |
| conversion factor | a ratio of equivalent measurements |
| measurement | a quantity that has both a number and a unit |
| Celsius scale | temperature scale on which water freezes at 0° and boils at 100° |
| dimensional analysis | a way to analyze and solve problems, using the units of the measurements |
| scientific notation | a method of expressing numbers as a product of a coefficient and a power of 10 |
| joule | the SI unit of energy |
| energy | the capacity to do work or to produce heat |
| absolute zero | zero on the Kelvin scale, temperature at which all molecular motion stops |
| accepted value | the correct value of a measurement based on reliable references |
| calorie | quantity of heat that raises 1 gram of pure water 1°C |
| experimental value | the value of a measurement made in the lab |
| gram | base SI unit of mass |
| International System of Units | the revised version of the metric system of measurement |
| Kelvin scale | temperature scale on which water freezes at 273 and boils at 373 |
| liter | base SI unit of volume |
| percent error | the absolute value of the error divided by the accepted value, multiplied by 100% |
| precision | measure of how close a series of measurements are to one another |
| weight | force that measures the pull of gravity on a given mass |
| significant figures | in a measurement all of the digits that are known, plus a last digit that is estimated |
| mega (M) | SI prefix for 1000000 times larger |
| kilo (k) | SI prefix for 1000 times larger |
| deci (d) | SI prefix for 10 times smaller |
| centi (c) | SI prefix for 100 times smaller |
| milli (m) | SI prefix for 1000 times smaller |
| micro (µ) | SI prefix for 1000000 times smaller |
| nano (n) | SI prefix for 1000000000 times smaller |
| pico (p) | SI prefix for 1 trillion times smaller |
