Chemistry Comprehensive (Qualitative Analysis)

Acid and metal react to form:

• Hydrogen Gas

• Salt

• Oxygen Gas

• Carbon Dioxide

Acid and Carbonate react to form:

• Carbon Dioxide

• Water

• Salt

• Hygrogen gas

Acid and Base react to form:

• Salt

• Water

• Hydrogen Gas

• Carbon Dioxide

A strong acid undergoes ________ dissociation in aqueous solution to form a higher concentration of H⁺ while a weak acid undergoes _______ dissociation in aqueous solution to form a lower concentration of H⁺ ions.

• complete, partial

• partial, complete

All Alkalis are bases, but not all bases are Alkalis.

• True

• False

Ammonium salt reacts with Alkali to form

Salt, water and ___________

• Ammonia gas

• Ammonia (aq)

Calcium Oxide and Calcium Hydroxide are used to neutralise acidic soil.

Choose only 2 answers.

Aqueous Ammonia is used for ________ and ___________.

• Window cleaning solution

• Toothpaste

• Detergent

• Fertilizer

Screened Methyl Orange is Violet in Acidic solution.

What colour is Screened Methyl Orange in Alkaline solution?

• Yellow

• Green

Answer explanation

Methyl Orange is Red in Acidic solution and Yellow in Alkaline solution.

Write down the name of a neutral oxide.

Answer explanation

Name does not equate to formula. Carbon Monoxide may be CO, but I didn't ask for that.

Amphoteric oxides can be memorised with the acronym, ZAP

Z is for Zinc

A is for Aluminium

P is for?

• Potassium

• Pb (Lead)

• Phosphorus

• Platinum