Identify these reactions?

Question

Can you please help me identify the reaction for these chemical formulas, such as single replacement, double replacement, sythesis, decompisiton and more

1) Aluminum+ Iron (III) Chroide--->
2) Calcium Hydroxide---->
3)Water(use H2O) + Sulfur Trioxide--->
4) Sodium Choride + Magnesium Sulfate--->
5) Nitric Acid + Sodium Hydroxide--->
6) Butane (C4H10) + Oxygen--->
7) Copper (II) Carbonate--->
8) Silver + Oxygen--->

Answer 1

This is the third time this question is being asked.

OK, one more time. Look at the reactants and decide what type of reaction you have.

If reactants are 2 separate elements = synthesis
(combine the two elements into one compound)

If reactant is only one compound = decomposition
metal carbonates form metal oxides + CO2
metal hydroxides form metal oxides + water
acids decompose into water and non-metal oxides

If the reactants are one element + one compound = single replacement (exchange a metal element for the metal in the compound; exchange a non-metal element for the nonmetal in the compound)

If the reactants are two compounds = double replacement
(exchange the two metals in the two compounds)

If the reactants are a hydrocarbon + oxygen = combustion
(a hydrocarbon is a compound of carbon and hydrogen)
The products are water and CO2.

The only tricky one is #3 - it looks like double replacement but is actually synthesis. Combine the two reactants to make a common acid.

Answer 2

1. Single Displacement

2. Synthesis

3. Double displacement

4. Double Displacement

5. Decomposition

6. Combustion

7. Decomposition

8. Synthesis