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Chem 120 - Final Exam - JMU - Wilson
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- Chem 120 - Final Exam - JMU - Wilson
Chem 120 - Final Exam - JMU - Wilson
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Chem 120 - Final Exam - JMU - WilsonMixture - -physical chance to form and separate
-compound - -chemical change to form and separate
-heterogenous mixture - -socquid, can't see through, separates
-homogenous mixture - -socquids & liquids, can see through
-metal qualities - --majority of periodic table
-solid at room temp except mercury
-shiny
-malleable
-ductile
-conduct heat and electricity
-high density
-tend to lose electrons
-nonmetals qualities - --gases or solid/liquids with relatively low melting
points
-opposite properties of metals
-K - Kilo - -1 kilo = 1000 units
-D - deci - -1 unit = 10 deci
-C - centi - -1 unit = 100 centi
-m - milli - -1 unit = 1000 milli
-mc - micro - -1 unit = 1000000 micro
-base units - -grams (g), meter (m), liter (L), hertz (Hz), mole (mol), etc...
-1 gallon - -3.79 liters
-density formula - -D = m/v
-Ion - -atoms w/ a charge - can be positive or negative
-isotope - -different atoms of the same element w/ different mass
-electron - --1 charge
located in the electron cloud
, dictates charge
smallest
-proton - -+1 charge
located in nucleus
dictates atomic #
medium
-neutron - -0 charge
located in the nucleus
dictates mass #
biggest
-atomic number - -the number of protons in an atom
-mass number - -the total number of protons and neutrons in a nucleus.
-ionic - -metals + nonmetal
-covalent ` - -nonmetals + nonmetals
-top right - -smallest atomic radius
-bottom left - -largest atomic radius
-ionic bonds - --ion attract each other
-not real bonds
-covalent bonds - --share electrons between atoms
-share an octet
-ionic bond analogy - -booty call
-covalent bond analogy - -committed relationship
-indicators of a chemical change` - --temp change
-color change
-a gas is formed (ie bubbles or fizzing)
-a precipitate
-combustion reaction - -reacts with O2 -
CH4 + O2 --> CO2 + H2O
-combination reaction - -one product -
C + O2 --> CO2
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