Types of Chemical Reactions

Multiple Choice

What do you understand by the term "chemical reaction"?

• Reactions between elements

• A process that involves rearrangement of structure of a substance

• A change in the physical form of a molecule.

• When a molecule or ion is changed by giving off light.

​There are several types of chemical reactions.

​Do you know any?

​Let's see what some of them are

​1) Decomposition

​2) Displacement

​3) Double Displacement

​4) Redox

​5) Neutralisation

​6) Reversible Reaction

​7) Synthesis or Combination

Multiple Choice

Synthesis or Combination is 

• one reactant is reduced and the other is oxidised

• two compounds exchange radicals

• two or more compounds combine to form a single substance

• an acid and a base react together to form a salt and water

Multiple Choice

The direction of a chemical change can be easily reversed by changing the conditions. This is an example of a

• Redox reaction

• decomposition reaction

• synthesis reaction

• reversible reaction

Multiple Choice

Sodium hydroxide and sulphuric acid react together to form sodium sulphate and water. This is an example of what type of chemical reaction? 

• Amphoteric react

• Titration

• Neutralisation reaction

• Redox reaction

Multiple Choice

Decomposition occurs when

• a compound splits into simpler substances usually with the aid of heat.

• one element takes the place of another element.

• one reactant gains electrons and the other loses electrons

• a compound is placed in the ground and is broken down.

Multiple Choice

These reactions occur simultaneously and results in a compound being reduced (gaining electrons) and another compound being oxidised (losing electrons). 

• Neutralisation Reactions

• Redox Reactions

• Combination Reactions

• Displacement Reactions

Multiple Choice

Chlorine replaces iodine in the reaction: Cl2 + KI --> KCl + I2. This is a _____________ reaction.

• replacement

• double displacement

• decomposition

• displacement

Multiple Choice

The following is not an exact equation but represents a _________ ___________ reaction: 

AX + BY --> AY + BX

• Thermal decomposition

• Double Displacement

• Reduction- Oxidation Reactions

• Heat Synthesis