Acids & Alkalis

Question 1

Properties of Acids

Answer 1

Acids are an important group of chemicals. Acids often have sharp or sour tastes. Strong acids can wear away or corrode metals, but many are weak and harmless.
All acids contain hydrogen.

Question 2

Properties of Alkalis

Answer 2

Alkalis are an important group of chemicals. Many strong alkalis are described as caustic, which means they can burn living tissue. We can find acids and alkalis all over the place, in food, soap, shampoo and even your stomach.
All alkalis contain hydroxide.

Question 3

Everyday acids

Answer 3

Lemon juice, orange juice, milk, vinegar, soft drinks-(coke, sprite etc.), citric fruits-(orange, lemon, limes, tangerines grapefruit etc.)

Question 4

Everyday alkalis

Answer 4

Soap, bicarbonate of soda, shampoo, toothpaste, bleach.

Question 5

Types of indicators

Answer 5

UI, Blue litmus paper, pink litmus paper, Phenol Pthalein, liquid litmus, UI paper, red cabbage indicator.

Question 6

p.H stands for…

Answer 6

Potential for Hydrogen

Question 7

Neutralisation

Answer 7

As an acid is added to an alkali a neutral reaction occurs. The pH at this point is p.H. 7, and the solution is neutral. This solution is made of the salt sodium chloride and water both of which have a neutral pH.

Question 8

Hydrochloric

Answer 8

HCl

Question 9

Sulfuric acid

Answer 9

H2SO4

Question 10

Nitric acid

Answer 10

HNO3

Question 11

Sodium hydroxide

Answer 11

NaOH

Question 12

Potassium hydroxide

Answer 12

KOH

Question 13

Calcium hydroxide

Answer 13

Ca(OH)2