Acids, Bases & Salts

Question 1

pH level of acids

Answer 1

0-6

Question 2

pH level of neutral

Answer 2

7

Question 3

pH level of base

Answer 3

8-14

Question 4

What is Acid?

Answer 4

Acid is a substance that generates H+ ions in aqueous.

Question 5

What is base?

Answer 5

Base is a substance that generates OH- ions in aqueous. Bases are generally metal oxides or hydroxides. Soluble bases are alkalis.

Question 6

Indicators

Answer 6

Red to Blue = Alkali
Blue to Red = Acid

Acid = Red
Base = Yellow
Neutral = Orange

Question 7

What is neutralization?

Answer 7

Neutralization is a reaction between acid & base. It forms salt and water as its product.

Question 8

Acids + Metal

Answer 8

Acids + Metal = Salt + Hydrogen

Question 9

Acids + Base

Answer 9

Acids + Base = Salt + Water

Question 10

Acids + Carbonate

Answer 10

Acids + Carbonate = Salt + Water + Carbon dioxide

Question 11

Base + Ammonium Salt

Answer 11

Base + Ammonium Salt = Salt + Ammonia (NH3) + Water

Question 12

Insoluble bases

Answer 12

Insoluble bases do not affect litmus paper. Non - metal oxides are basic.

Question 13

Amphoteric

Answer 13

Amphoteric have properties of bases and acids. E.g. Zinc oxide/hydroxide

Question 14

Acid

Answer 14

Acids are proton donors

Question 15

Base

Answer 15

Bases are proton acceptors

Question 16

Strong Acid

Answer 16

Strong acids are acids that completely ionize in aqueous solutions losing H+ ions completely.

Question 17

Strong bases

Answer 17

Strong bases are bases which completely ionize in aqueous solution releasing OH- ions completely.