Chemical Reactions
Posted: December 27th, 2010, 1:51 pmIntroduction
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Reactants: the chemicals present before the reaction
Products: the chemicals formed by the reaction
ex. CH[sub]4[/sub] + O[sub]2[/sub] → CO[sub]2[/sub] + H[sub]2[/sub]O
Methane and oxygen gas yields carbon dioxide and water
Methane and oxygen are the REACTANTS
Carbon dioxide and water are the PRODUCTS
The equation above is NOT balanced.
Unbalanced:
1 C, 4 H, 2 O | 1 C, 2 H, 3 O
There needs to be the same number of each atom on both sides
CH[sub]4[/sub] + 2O[sub]2[/sub] → CO[sub]2[/sub] + 2H[sub]2[/sub]O
This equation is now balanced
1 C, 4 H, 4 O | 1 C, 4 H, 4 O
Types of Chemical Reactions
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A. Composition A + B → AB
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Reactants: the chemicals present before the reaction
Products: the chemicals formed by the reaction
ex. CH[sub]4[/sub] + O[sub]2[/sub] → CO[sub]2[/sub] + H[sub]2[/sub]O
Methane and oxygen gas yields carbon dioxide and water
Methane and oxygen are the REACTANTS
Carbon dioxide and water are the PRODUCTS
The equation above is NOT balanced.
Unbalanced:
1 C, 4 H, 2 O | 1 C, 2 H, 3 O
There needs to be the same number of each atom on both sides
CH[sub]4[/sub] + 2O[sub]2[/sub] → CO[sub]2[/sub] + 2H[sub]2[/sub]O
This equation is now balanced
1 C, 4 H, 4 O | 1 C, 4 H, 4 O
Types of Chemical Reactions
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A. Composition A + B → AB
- 1. two elements → a binary compound
- write the metal first followed by the nonmetal
- using the charges derived from the periodic table, add subscripts to balance the formula
- add coefficients to balance the equation
- a. a metal and a nonmetal