Question

three examples of combination reaction

Answer 1

1. C+O2=CO2
2. 2Mg+O2=MgO
3. 2Ca+O2=CaO

Answer 2

Answer:

1. Reaction between two elements

Ex: C + O2`->` CO2

Here the carbon is completely burnt in oxygen which results in carbon dioxide 

2. Reaction between two compounds

Ex: CaO + H2O `->` Ca ( OH)2

Here the calcium oxide (lime) combined with water gives calcium hydroxide which also known as slaked lime.

3. Reaction between an element and compound

Ex: O + H2O `->` H2O2

Here oxygen which is an element combined with water which is a compound gives hydrogen peroxide.

Explanation:

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