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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 |

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