3 balancing equations word equations. what is the big idea? the universe is balanced!
TRANSCRIPT
What is the big idea?
The universe is balanced!
Al
I
Al
I
__Al(s) + __ I2(g) __ AlI3(s)3 22
Balance the equation
Each element has the same number on each side
ProductsReactants
2
6
2
6
You can only put coefficients in front of each formula
The total number of atoms is the coefficient x the subscript
__C3H8(s) + O2(g) __ CO2(g) + __ H2O(g) 5 43
10 Oxygen
+
10 Oxygen
6 Oxygen 4 Oxygen
½ is allowed but not ¼……….
__C8H18(s) + __ O2(g) __ CO2(g) + __ H2O(g) 12.5 98
25 Oxygen
+
25 Oxygen
16 Oxygen 9 Oxygen
½ is allowed but not ¼……….
Phase Symbols
(s) solid Fe(s)
(l) liquid H2O(l)
(g) gaseous O2(g)
(aq) aqueous NaCl(aq)
dissolved in water
Common Acids
HCl Hydrochloric Acid
H2SO4Sulphuric Acid
H3PO4 Phosphoric Acid
HNO3 Nitric Acid
CH3COOH Acetic Acid
H2CO3 Carbonic Acid
Stomach
Coke Fluoride Treatment
Vinegar
Dissolving metals
Acid Rain
Carbonated Beverages
Hydrates
MgSO4.5H2O Magnesium sulphate pentahydrate
BaCl2.6H2O Barium chloride hexahydrate
FeSO4.H2O Iron II sulphate monohydrate
Greek prefixes
1 – mono
2 – di
3 – tri
4 – tetra
5 – penta
6 - hexa
7 - hepta
8 - octa
9 – nona
10 - deca
11 - undeca
12 - dodeca
3 3 2
Word Equations
A solution of barium phosphate is mixed with aqueous sodium sulphate to yield solid barium sulphate and aqueous sodium phosphate.
Ba3(PO4)2(aq) + Na2SO4(aq) → BaSO4(s) + Na3PO4(aq)
A solution of aluminum chloride, carbon dioxide, and water can be prepared by mixing pure aluminum carbonate with a solution of hydrochloric acid.
Al2(CO3)3(s) + HCl(aq) CO2(g) + AlCl3(aq) + H2O(l)3236