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Chem Chap 2 Sec 2
Unit of Measure
| Question | Answer |
|---|---|
| something that has magnitude, size, or amount. | Quanity |
| True or False: Quanity is the same as measurement.s | False, Units of measurement compare what is to be measured with a previously defined size |
| What system was adopted in 1960 by the General Conference on Weights and Measures | SI (Le Systeme International d'Unites) |
| SI units are defined in terms of ____________ | Standards of measurement |
| SI Base Unit: Quantity Length's unit name is | meter |
| SI Base Unit: Quantity Mass unit name is | kilogram |
| SI Base Unit: Quantity Time unit name | Second |
| SI Base Unit; Quantity Temperature | Kelin |
| SI Base Unit: Quantity Amount of Substance | mole |
| SI Base Unit: Quantity Electric current | ampere |
| SI Base Unit: Quantity Luminous intensity | candela |
| Measure of the quantity of matter | mass |
| A measure of the gravitational pull on matter | Weight |
| Mass is measured on _______ | instruments such as a balance |
| Weight is measured on _____________ | a spring scale |
| Derivative for Area | length x width |
| Derivative for Volume | length x width x height |
| Derivative for Density | Mass / volume |
| Derivative for Molar Mass | mass / amount of substance |
| Derivative for Molar volume | volume / amount of substance |
| Derivative for energy | force x length |
| The amount of space occupied by an object | Volume |
| The derived SI unit of volume | cubic meters |
| The ratio of mass to volume or mass divided by volume | Density |
| Formula for Density is | mass / volume or M / V |
| A ratio derived from the equality between 2 different units that can be used to convert | converstion factor |
| Converstion factors are equal to | 1 |
| a mathematical technique that allows you to use units to solve problems involving measurements | dimentional analysis |
| Equation for quantity sought | quantity given x conersion factord |
| deci means | 1/10 |