Term |
Definition |
Pure Substance |
substance made of one kind of materials having definite properties. |
Element |
pure substance made up of only one type of atom |
Compound |
pure substance made up of two or more elements which have been chemically joined |
Molecule |
smallest unit of a compound Water Molecule |
Chemical Formula |
combination of chemical symbols used to represent a compound |
Chemical Equation |
expression using symbols, formulas and numbers are used to represent a compound. |
Coefficient |
number in front of a chemical formula or symbol that tells you how many molecules are involved in the reaction. |
Subscript |
Shows the number of atoms of an element in a molecule. |
Reactant |
Materials present before a reaction |
Product |
materials present after a reaction.
|