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Krys Chem 1

Exam 1

Metalloids elements that touch bold line except Al
Heterogeneous Components not mixed uniformly; can see individual components
Density amount of substance per unit volume; ususally g/mL
Density Equations D= M/V, M= DxV, or V= M/D
Physical Change doesn't change chemical nature
Rows (periods) runs left to right on periodic table
suspension opaque (cant see thru them) particles are large enough to be seen
Sublimation solid straight to gas
Alkaline earth metals Column 2
Endothermic takes in heat (remember En)
states of matter solid, liquid, gas
Deposition gas straight to solid
Melting solid to liquid
Boiling Point 212 F and 100 C
Exothermic gives off heat (remember ex)
Room Temp 68 F and 20 C
Freezing Point 32 F and 0 C
Chemical Change does change its chemical nature
Evaporation liquid to gas
Nonmetals to the right of bold line
Transition Metals Columns 3-10 (smaller area on table)
Columns (Groups) Run up and down
Condensation gas to liquid
Freezing liquid to solid
Alkali metalse Column 1
Kinetic Energy energy results from motion
Halogens column 15
Scientific Method observation, hypothesis, experimental test, conclusion, report results
Giga (G) 1,000,000,000
Kilo (k) 1,000
Centi (c) 0.01
Milli (m) 0.001
Micro 0.000001
element substance that can't be broken down into simplier substances
F and C degrees line up -40
Compound substance that can be broken down into simplier substances by chemical means
mixture substance that can be broken down by physical means
homogeneous all components are mixed uniformly; looks like 1 substance
Noble gases last column
unit for mass grams (g)
unit for length meters (m)
unit for volume Liters (L)
Unit for time seconds (s)
Solution Clear (doesn't mean colorless)
Potential Energy stored energy
metals to the left of bold line
Created by: s501963