Types of reactions

react lol

What is synthesis?

The combination of 2 or more reactants to form a new product.

What is the general equation for synthesis?

A + B —> AB

What is decomposition?

The splitting of larger compounds to smaller molecules/elements. Energy is often added.

What is the general equation for decomposition?

AB —> A + B

Single displacement?

When 1 element takes the place/displaces another element in a compound.

What is the general equation for single displacement?

AB + C —> AC + B (if C is -ve)

AB + C —> CB + A (if C is +ve)

What does the single element replace in SD if +ve

the cation

What does the single element replace in SD if -ve

the anion

What is the activity series?

A list of elements organized by their reactivity. Helps determine whether a SD reaction occurs. If the free element is above the element being displaced, a SD reaction occurs. If not, there will be no reaction

The most reactive is…

on the top

The least reactive…

is at the bottom

Double displacement?

When elements in different compounds displace each other. The cation will displace the other cation, the anion will displace the other anion.

What is the general equation for double displacement?

AB + CD —> AD + CB

What is combustion?

When a hydrocarbon reacts quickly with oxygen.

Hydrocarbons are..

molecules made up of mostly hydrogen and carbon atoms

Complete combustion?

Hydrocarbon + oxygen —> carbon dioxide + water

Incomplete combustion?

Hydrocarbon + oxygen —> carbon dioxide + water + carbon + carbon monoxideW

What causes incomplete combustion?

Not enough oxygen

What is carbon monoxide?

A odourless, colourless gas that can cause sudden illness and death as red blood cells pick up the CO faster than O₂.