Gr. 10 Chem: Describing Chemical Reactions

What is the format of a word equation?

Reactants/starting materials —> Products/New substances

If a word equation says yeilds, forms, produces etc. it represents…

An arrow: —>

Word equations….

Uses words to describe the reactants and expected products of a chemical reaction

Chemical Chemical equations…

Uses chemical formulas to describe the reactants and expected products of a chemical reaction

Chemical equations must include…

The state of each substance:

(g) = Gas, (l) = Liquid, (s) = solid, (aq) = aqueous solution/Acid (dissolved in water)

What are the 2 types of chemical equations?

1. Skeleton Chemical Equations

2. Balanced Chemical Equations

If a word equation says powder, pellets, metal etc. it represents…

A solid: (s)

If a word equation says when dissolved, water etc. it represents…

A liquid: (l) *cursive L

If a word equation says solution, dissolves in water, acid etc. it represents…

An Aqueous Solution: (aq)

If a word equation says vapour, gas etc. it represents…

A Gas: (g)

If a word equation says heat, temperature, exothermic/endothermic etc. it represents…

Energy: E