SCS Year 7 Acids & Alkalis

A weak acid can be described as

• Any solution above pH 11

• an acidic solution of Ph range 4-6

• An acid that has been diluted

• An acidic solution of pH range 4-6

Universal indicator will

• turn red with bleach

• turn green with cola

• identify weak and strong pH

• turn red in an alkaline solution

What is the chemical formula for sulphuric acid?

• HNO₃

• HCl

• H₂SO₄

• _H₂NO₃

How would you describe a solution of pH 8?

• Neutral

• Weak alkali

• Weak acid

• Strong acid

What are the products when an acid and alkali react?

• Salt and water

• Salt and hydrogen

• Salt only

• Hydrogen only

What salt is made if sulphuric acid is mixed with calcium hydroxide?

• Sulphur hydroxide

• Calcium sulphate

• Calcium sulphuric

• Sulphuric oxide

What is the correct description of how an acid and alkali react?

• Acidification

• Naturalisation

• Neutralisation

• Alkalisation

What pH best describes a neutral solution?

• 0

• 1

• 7

• 14

What would Jim need to react to make copper chloride?

• Hydraulic acid and copper

• Copper chloride and hydrogen

• Copper and sulphuric acid

• Hydrochloric acid and copper hydroxide

Nitric acid always makes which kind of salt?

• An acidic one

• Blue ones

• Nitrates

• Nitricous