State four conditions necessary for a chemical reaction to take place.
- Close contact— For a chemical reaction to take place the reactants should be brought in close contact i.e., they should be mixed,
- Solution form— Some substances react with each other only when they are mixed in the solution form,
- Heat— Some reactants need to be heated to undergo a chemical change,
- Light— Some reactions take place in the present of light.
Concept: Information Gathered from a Chemical Equation
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