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Chemistry Ch. 2
section 2.7-2.9
| Question | Answer |
|---|---|
| The mass for 1 mole of any substance is called the ___ | molar mass |
| When referring to elements, we use ___ | atoms |
| When referring to compounds, we use ___ | molecules |
| g/mol is the same thing as: | atomic mass unit (amu) |
| Elements are organized by __ | increasing atomic number |
| Elements in the same row left to right are called: | periods |
| Periodic Law states: | when elements are arranged by increasing atomic mass, certain properties reoccur periodically |
| The percentage that each isotope is present in nature is referred to as ____ | natural abundance |
| ____ is used to measure the mass of an isotope and relative abundance | mass spectrometry |
| To find the atomic mass you must: | 1. multiply mass by its percentage 2. find product of each expression |
| ____ metals transition between different charge states | transition |
| Metals always form a ___ charge | positive |
| ____ are shiny, malleable, and conduct electricity. | metals |
| The two types of metals are: | alkali and alkali earth metals |
| Alkali metals are: | soft, low melting point, & reactive [increasing down group] |
| Alkali earth metals are less ___ than alkali metals | reactive |
| Metalloids has the properties of: | metals and nonmetals |
| Nonmetals are ____ | poor conductors of heat and electricity [brittle] |
| What are the 2 type of nonmetals? | Noble gases and halogens |
| The most reactive group of nonmetals are: | halogens |
| Noble gases are ___ | nonreactive [decreasing down group] |
Created by:
Mariahj25
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