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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 |