Question

explain 4 types of chemical reactions with 1 examples each

Answer 1

Explanation:

The main four types of reactions are direct combination, analysis reaction, single displacement, and double displacement. If you're asked the five main types of reactions, it is these four and then either acid-base or redox (depending who you ask).

Answer 2

Answer:

A chemical reaction is a process that involves combination of a few substances to give rise to newer products.

Types of reactions include:

1. Combination reaction: A chemical reaction in which two or more reactants combine to give rise to a single product.

e.g. $2Ca + O_{2} ---> 2CaO$

2. Decomposition reaction: A chemical reaction in which a single substance/reactant decomposes into two or more products.

Types of decomposition reactions include Thermal decomposition, Photodecomposition, and electrolysis [use of electric current].

e.g. $2AgCl+ sunlight --> 2Ag + Cl_{2}$

3. Displacement reaction: A chemical reaction in which a more reactive element displaces a less reactive element from its compound in aqueous form.

e.g. $Zn+CuSO_{4} --> ZnSO_{4} +Cu$

4. Double Displacement reaction: A chemical reaction that involves an exchange of ions between the reactants.

e.g. $HCl+NaOH-->NaCl+H_{2}O$

5. Redox reactions: Oxidation-Reduction or Redox reactions are reactions involving both, oxidation (addition of oxygen or removal of hydrogen) of one reactant, and reduction (removal of oxygen or addition of hydrogen) of the other.

e.g. $2Fe + O_{2} +H_{2}O --> Fe_{2} O_{3} +H_{2}$

Hope this helps!