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Ch. 8 CHEMISTRY
Chemistry
15
Science
Undergraduate 2
02/29/2012

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Term
Molecular weight of water
Definition
H: 2 x 1.00 = 2.00
O: 1 x 16.00 = 16.00
= 18.00 amu
Term
MOLECULAR WEIGHT
Definition
Weight of each atom times number of atoms present
Term
Chemical Reactions
Definition
Reactants -------> Product
* Arrow means YIELD and can be drawn both ways
Term
Chemical Equations: Law of conservation of mass
Definition
Matter is neither CREATED nor DESTROYED in a chemical reaction
Term
Chemical equations-
Definition
Mass of reactants = mass of products
Term
Equation on power point slide
Definition
Reactants Products
Carbon 1 1
Hydrogen 4 4
Oxygen 4 4
Term
MOLE
Definition
Consists of 6.022 x 10 ^23 (10 to the 23rd)atoms
Term
Mole of carbon 12
Definition
weighs 12 grams
Term
molecular weight of Cu(NO3)2
Definition
Cu: 1 x 63.50 = 63.50
N: 2 x 14.00 = 28.00
O: 6 x 16.00 = 96.00
= 187.50
Term
Electron Issue
Definition
An electron in circular orbit is changing in velocity
Term
The BOHR model
Definition
1- Electrons only is CERTAIN ALLOWED ORBITS
2- Although electrons accelerate, they do not RADIATE
3- Electrons energy changes at DIFFERENT ORBITS. Energy from photon with 'exact' amount of energy needed for orbit changes
Term
QUANTUM REVOLUTION
Definition
Deals with probabilities, not certainties
Term
What kind of bond is WATER?
Definition
POLAR COVALENT CHEMICAL BOND
Term
Number of atoms in 1 mole of sodium
Definition
6.0022 x 10 ^23
(10 to the 23rd)atoms
Term
Weight of 1 mole of sodium
Definition
22.99 grams
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