Entry test requirements

What is the formula for the hydroxide ion?

OH⁻

What is the name of SO₄²⁻?

Sulfate ion

Write the formula for the carbonate ion.

CO₃²⁻

What is the name of NH₄⁺?

Ammonium ion

What is the formula for the nitrate ion?

NO₃⁻

Write the formula for the chloride ion.

Cl⁻

What is the formula for sulfuric acid?

H₂SO₄

Name the acid HCl.

Hydrochloric acid

What is the formula for acetic acid?

CH₃COOH

Name the base NaOH.

Sodium hydroxide

What is the formula for ammonia?

NH₃

Name the acid HNO₃.

Nitric acid

What is the product of a reaction between an acid and a base?

Salt and water.

What happens when calcium reacts with water?

Forms calcium hydroxide and hydrogen gas.

What precipitate forms in a reaction between barium chloride and sodium sulfate?

Barium sulfate (BaSO₄).

What gas is produced when zinc reacts with hydrochloric acid?

Hydrogen gas (H₂).

Write the decomposition reaction for calcium carbonate.

CaCO₃ → CaO + CO₂.

What is the product of combusting ethane (C₂H₆)?

Carbon dioxide (CO₂) and water (H₂O).

Name the molecule CH₄.

Methane

What is the IUPAC name for ethanol?

Ethyl alcohol or Ethanol.

What happens when benzene reacts with bromine?

Bromobenzene (C₆H₅Br) forms.

Name the molecule C₆H₆.

Benzene.

Write the reaction for the oxidation of ethanol.

CH₃CH₂OH → CH₃CHO → CH₃COOH.

What is the product of hydrating cyclohexene?

Cyclohexanol.

Define lattice energy.

The energy released when gaseous ions form an ionic solid.

What is Le Chatelier’s Principle?

A system at equilibrium shifts to counteract external changes.

What is a ligand?

A molecule or ion that donates a lone pair of electrons to a central metal atom.

What is an amphoteric oxide?

An oxide that reacts with both acids and bases (e.g., Al₂O₃).

Define chelating agent.

A molecule that binds tightly to a metal ion at multiple sites (e.g., EDTA).

What is the oxidation state of sulfur in H₂SO₄?

+6.