Question

Practice Zone 2
What do you understand by a chemical reaction? Explain with an example.​

Answer 1

Answer:

A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water. ... many reactions that happen inside living things

Answer 2

$\huge\underline\mathfrak\red{Chemical\: reaction}$

A chemical reaction is what when there is a change in state,change in colour,there is gas evolution and there is temperature change.

Examples of chemical reaction:

Mg+O2------------MgO

2Fe+3H20---------Fe3O2+3H2

$\huge\underline\mathcal\purple{BTS\: EXO}$