Chemistry form 4 (salt)

A salt is formed when nitric acid combines with sodium hydroxide. What are present in the salt that forms?

• Sodium chloride

• sodium ions and nitrate ions

• only sodium ions

• only nitrate ions

What are the products if magnesium reacts with hydrochloric acid?

• Magnesium chloride + Hydrogen

• Magnesium sulfate + Hydrogen

• Magnesium oxide + Hydrogen

• Magnesium sulfide + Hydrogen

Which of the following salts is prepared by precipitation method?

• sodium chloride

• barium sulfate

• calcium nitrate

• ammonium carbonate

Which of the following can be prepared by titration?

• Magnesium sulfate

• Zinc carbonate

• Lead (II) sulfate

• Lithium chloride

Salt breaks down ice by lowering the ...

• boiling point

• melting/freezing point

• elasticity point

• fire point

What is the scientific name for salt?

• Sodium chloride

• Hydrochloric acid

• Acetic acid

• Potassium chloride

What are the risks if you eat too much salt?

• Hypertension

• Stomach cancer

• Obesity

• All of the above

Salt Y soluble in water produce brown solution.

Possibly salt Y contains ...

• Copper(ll) ion

• Iron(ll) ion

• Iron(lll) ion

• Ammonium ion

Salt X soluble in water produced blue colour.

Possibly salt X contains....

• Iron(lll) ion

• Iron(ll) ion

• Copper(ll) ion

• Zinc ion

Green colour of salt A dissolves in water produce blue colour solution.

• Copper(ll) chloride

• Copper(ll) sulphate

• Copper(ll) nitrate

• Copper(ll) carbonate