Oxidation states and other important things

Seven Diatomic molecules (Example O₂)

Nitrogen, Hydrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine

The positive ions are known as……..

Cations

The negative ions are known as ……………

Anions

Methane
Ethene
Ethane

CH₄
C₂H₄
C₂H₆

Oxygen with its oxidation state

O^2-

Silver with its oxidation state

Ag⁺

Zinc with its oxidation state

Zn²⁺

Aluminum with its oxidation state

Al³⁺

Hydrogen with its oxidation state when combined with non metal
Hydrogen with its oxidation state when combined with metal

H⁺
H^-

Ammonia (Only chemical symbol)

NH₃

Ammonium

NH₄⁺

Hydroxide

OH^-

Nitrate

NO₃^-

Sulfate

SO₄^2-

Sulfide

S^2-

Carbonate

CO₃^2-

Hydrogen carbonate

HCO₃^-

Phosphate

PO₄^3-

Chromate

CrO₄^2-

If there is a compound named ……… acid then this element will always be in the compound.

Hydrogen (H)

Write the compound with its oxidation state
Practice
Hydrochloric Acid
Sulfuric acid
Nitric acid

HCl
H₂SO₄
HNO₃

What is the state symbol for precitipate?

Solid

Sulfuric acid reacts to neutralise sodium hydroxide
What are the reactants?

H₂SO₄ and NaOH
Both of them.

What are these? And what happens when they react with water?
✅ Metal oxides (CuO, MgO)
✅ Metal hydroxides (NaOH, KOH)
✅ Ammonia (NH₃)
✅ Carbonates (CaCO₃, Na₂CO₃)
✅ Hydrogen carbonates (NaHCO₃, KHCO₃)
✅ Amines (CH₃NH₂, C₂H₅NH₂)

Bases

Practice

Answer