Question

A. Fill in the blank spaces by choosing the correct words from the given list.

List: products,yield,balanced,left,formulae

1. A statement that describes a chemical reaction in terms of symbols and _______ is called a chemical equation.

Answer 1

• The chemical equation is a statement that describes a chemical change in terms of symbols and formulae.
• For example, magnesium when reacts with oxygen forms Magnesium oxide.
• The chemical equation of the above example is: $\underset{\mathrm{Magnesium}}{2\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Magnesium}\mathrm{oxide}}{2\mathrm{MgO}\left(\mathrm{s}\right)}$

Therefore, a statement that describes a chemical reaction in terms of symbols and formulae is called a chemical equation.