Compounds, formulae and equations

Question 1

Cation

Answer 1

positively charged ion

Question 2

Anion

Answer 2

negatively charged ion

Question 3

Empirical Formula

Answer 3

simplest whole number ratio of each type of atom in a compound

Question 4

Molecular Formula

Answer 4

actual number of each type of atom in a compound

Question 5

Molecule

Answer 5

small group of atoms held together by covalent bonds e.g. H2O, Cl2, CH4 etc