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### 21 Cards in this Set

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 Density Mass per unit volume. kg/m3 or g/cm3 or g/mL Mass measure of the quantity of matter in a body Weight measure of the gravitational attraction for a body Accuracy how closely measured values agree with the correct value Precision how closely individual measurements agree with each other Specific gravity how dense your substance is relative to water. MP water Fahrenheit 32 F MP water Celsius 0.0 C MP water Kelvin 273 K BP water Fahrenheit 212 F BP water Celsius 100 C BP water Kelvin 373 K kelvin and centigrade relationship k= c+ 273 farenhieght and centigrade relationship f= (1.8)C+32 or C= (f-32)/1.8 if SG > 1 or w/e meduim is substance will sink if SG < 1 or w/e medium is substance will float!! A mole atoms, ions, or molecules; a number of things; One mole = 6.022 x 1023 things Avogadro’s number 6.022 x 1023 Symbol for Avogadro’s number is NA. Molar mass mass in grams numerically equal to the atomic weight of the element in grams. Empirical Formula smallest whole-number ratio of atoms present in a compound. Determined from the percent composition of the compound. which is determined experimentally Molecular Formula actual numbers of atoms of each element present in a molecule of the compound Ethene – C2H4 Pentene – C5H10. Determined from the percent composition of the compound. which is determined experimentally