LEC 10 Flashcards
Chemical Equations, Reactions and Equilibrium
1
Q
Chemical Reactions
A
- involves chemical change
- atoms of the reacting substances form new combinations with new properties
2
Q
Chemical change
A
- substance is converted into one or more new substances
- new substances have different formulas and different properties.
3
Q
Chemical Reactions Types (4)
A
- Combination
- Decomposition
- Replacement
- Combustion
4
Q
Combination Reaction
A
two or more elements bond to form one product
5
Q
Combination Reaction Formula
A
A + B = AB
6
Q
Decomposition Reaction
A
a reactant splits into two or more simpler products
7
Q
Decomposition Reaction Formula
A
AB = A + B
8
Q
Replacement Reaction
A
elements in a compound are replaced by another element (Single or Double)
9
Q
Replacement Reaction Formula
A
A + BC = AC +B
AB + CD = AD+ CB
10
Q
Combustion Reaction
A
carbon containing compound burns in oxygen to produce carbon dioxide and water
11
Q
Combustion Reaction Formula
A
Carbon compound (fuel) + oxygen = CO2 + H2O + energy
