test review - Converting Temperature T Fahrenheit= 1.8(T...

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Converting Temperature T Fahrenheit= 1.8(T Celsius) + 32 K= °C +273.15 Rules of Significant Figures 1. All numbers 1-9 are significant 2. "zeros" a) leading zeros are not significant b) captive zeros are significant c) trailing zeros No decimal point (not sig) Has a decimal point (sig) d) multiplication and division e) subtraction and addition Density Denisty = mass/volume * varies with temperature: - as temp increases , density decreases Specific gravity = density of substance/ density of water Naming Compounds, Polyatomic Ions, and Molecules Binary Ionic Compounds - The name of the cation is the same as the name of the metal. -The name of the anion takes the root or the nonmetal name and adds the suffix -ide . Ex. cation Calcium + anion Bromine Calcium Bromide Polyatomic Ions With two oxanions: -The ion with more O atoms takes the nonmetal root and suffix -ate. -The ion with fewer O atoms takes the nonmetal root and the suffix -ite. With four oxanions; - The ion with most O atoms has the prefix per-, the nonmetal root, and the suffix -ate. - The ion with one fewer atoms has just the root and the suffix -ate.
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