Chemistry
Grade-10
Easy
Question
What is a chemical equation?
- Describes the number of elements in a compound.
- One or two letters that represent the elements on the periodic table
- The number to the lower right of an element that shows the number of atoms bonded.
- A written description of a chemical reaction.
Hint:
Chemical reactions are the chemical changes in which reactants transform into products by bond-making or bond-breaking or both between different atoms or molecules.
When such a reaction is expressed in terms of symbols and formula, it gives us a chemical equation.
The correct answer is: A written description of a chemical reaction.
A written description of a chemical reaction is a chemical equation.
- Chemical changes, such as the formation or breaking of bonds between various atoms or molecules, are what are referred to as chemical reactions.
- A chemical equation is thus produced when such a reaction is stated in terms of symbols and a formula.
- Chemical equations are therefore the symbolic depictions of chemical reactions where the reactants and products are stated in terms of their respective chemical formulae.
- Symbols are used in chemical equations to denote things like the direction of a reaction and the physical states of the reacting entities.
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