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SS-Chemistry: GOB 2
Question | Answer |
---|---|
Physical quantity | A physical property that can be measured. |
Unit | A defined quantity used as a standard of measurement. |
SI units | Units measurement defined by the International System of Units. |
Mass | A measure of the amount of matter in an object. |
Weight | A measure of the gravitational force that the earth or other large body exerts on an object. |
Significant figures | The number of meaningful digits used to express a value. |
Scientific notation | A number expressed as the product of a number between 1 and 10, times the number 10 raised to a power. |
Factor-label method | A problem-solving procedure in which equations are set up so that unwanted units cancel and only the desired units remain. |
Conversion factor | An expression of the numerical relationship between two units. |
Temperature | The measure of how hot or cold an object is. |
Energy | The capacity to do work or supply heat. |
Specific heat | The amount of heat that will raise the temperature of 1 g of a substance by 1 degree Celsius. |
Density | The physical property that relates the mass of an object to its volume |
Specific gravity | The density of a substance divided by the density of water at the same temperature. |