| Term | Definition |
|---|
| mass | the amount of matter in a substance; doesn't change depending on location |
| weight | the amount of gravity pulling on the object's matter; changes depending on location |
| last | In sig figs, which is the estimated digit? |
| d=m/v | formula for density |
| 5 | round up if the last digit is greater than this number |
| 1 | 1 mL = _ cm^3 |
| accuracy | the closeness of a measurement to the true value |
| precision | the extent to which an experiment can be repeated with the same result |
| mixture | composed of two or more pure substances |
| homogeneous mixture | also known as a solution |
| heterogeneous mixture | two or more phases present |
| Tyndall Effect | can be observed in a colloid but not in solutions |
| solids | the solubility in this increases as temperature increases |
| gases | the solubility in this decreases as temperature increases |
| atom | smallest part of element that can exist; have a neutral charge |
| ion | an atom or group of atoms that has a + or - charge |
| cations | positively charged ions |
| anions | negatively charged ions |
| monatomic ions | have only one type of atom |
| polyatomic ions | have more than one type of atom |
| ionic | compound that consists of a metal and nonmetal |
| covalent | compound that consists of two nonmetals |
| limiting | the reactant that gives you the least amount of the product |
| STP | examples of this are 1 atm and 273 K |
| ideal gas law | PV = nRT |
| 22.4 | 1 mol = how many liters? |
Combine with other sets
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