Week 1-5

Week 1

100

Ammonium

NH₄⁺

200

Copper 1

Cu⁺

300

Aluminum

Al³⁺

400

Hydroxide

OH^-

500

Carbonate

CO₃^2-

Week 2

100

Hydronium

H₃O⁺

200

Zinc

Zn²⁺

300

Chloride

Cl^-

400

Nitrate

No₃^-

500

Oxide

O^-

Week 3

100

Sodium

Na⁺

200

Calcium

Ca²⁺

300

Acetate

C₂H₃O₂^-

400

Fluoride

F^-

500

Phosphate

Po₄^3-

Week 4

100

Potassium

K⁺

200

Copper 2

Cu²⁺

300

Barium

Ba²⁺

400

Bromide

Br^-

500

Sulfate

SO₄^2-

Week 5

100

Lithium

Li⁺

200

Magnesium

Mg²⁺

300

Nitride

N^3-

400

Thiocyanate

SCN^-

500

Chlorate

ClO₃^-