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Test #1 chp 1-3
Principles of General Chemistry at Westminster College
41
Chemistry
Undergraduate 1
09/09/2014

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Term
Chemistry
Definition
The scientific study of Matter
Term
Scientific Process
Definition
1. Observation
2. Test
Term
Theory V. Law
Definition
t- explanation in words
mathematical statement
Term
Observation
Definition
Patterns and connections
hypothesis (if... then....)
Term
Test
Definition
Controls
as soon as hypotheses is wrong, must change it
Term
matter
Definition
has mass and volume
Term
Matter is split into
Definition
Pure and mixture
Term
Pure substance
Definition
cant separate physically
compound or an element
Term
solid to gas
Definition
sublimation
Term
gas to solid
Definition
deposition
Term
distilation
Definition
separation- different things boil at different temperatures
Term
exothermic
Definition
heat out, feels hot
Term
endothermic
Definition
heat in, cold
Term
1A
Definition
alkali metals
Term
2A
Definition
Alkalen earths
Term
7A
Definition
Halogens
Term
8A
Definition
Noble Gasses
Term
Metal quailities
Definition
1. Malleable
2. Ductile
3. Luster
4. conducts electricity
Term
energy
Definition
kinietic (moving) mostly heat
potential (storage) mostly chem bonds
Term
temperature v heat
Definition
spped and energy
Term
significant figure rules
Definition
1. zeros to the left of a number are never significant
2. zeros in the middle of a number are significant
3. zeros to the right of a number are ambiguous
*if a decimal is present, the zeros are significant
Term
swithcing notation
Definition
350.0=3.500*10^2
Term
rules of calculation
Definition
(*)(/) report the answer to the lowerst number of sig fig in problem
(+)(-) report the lowest # of decimol places
Term
theory
Definition
genralized hypothesis
Term
law of mulitple propoeritons
Definition
whne two elemtns from different compounds, ratios will be different
Term
mass charge
Definition
P=1 amu
N=1 amu
E=0 amu
Term
1 mole
Definition
6.022*10^23
Term
cations.. metals
Definition
(+) charged
1. small main group metals (1A-3A) have the charge of the group number
2. large main group metals have two possible charges. the group numbre and the group number -2
3. tranition metals need more info
Term
Naming Cations
Definition
1. For small maingroup metals name the elemnt followed by ion
2. For all other metals name the elemnet then give the charge, then ion
Term
Anions...non metals
Definition
(-) charge
the charge on an anion is the group number -8
Term
naming anions
Definition
name the elemnt chaning the inding to ide, then ion
Term
metals loose electrons to become cations
Definition
non metals gain electrons to become anions
Term
ium ending
Definition
cation
Term
ate or ite ending
Definition
oxygen
Term
halogens ate v ite
Definition
per chlorage 4-
chlorate
chlorite
hypochlorite 1-
Term
bicarbonate
Definition
hydrogen carbonate
Term
Formula unit of ionic compoin
Definition
crystal patturn
smallest ratio that will add charge to 0
Term
ions order
Definition
cation always comes first
Term
ammoniom
Definition
only ionic compoind not metal and non metal NH4
Term
Naming Ionic compounds
Definition
name the cation
then name anion
do not indicate numbers of ions
Term
writing compoinds from name
Definition
write the ions (with charge)
put them together by charge
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