Acid And Alkali

Question 1

What is a pH?(1mark)

Answer 1

Measures how acidic or alkaline a substance is. (1mark)

Question 2

Test for hydrogen?(2mark)

Answer 2

Lit split(1mark) to mixture makes a pop sound to show that hydrogen is present(1mark).

Question 3

Test for carbon dioxide?(2mark)

Answer 3

Limewater test(1mark) if bubbles thought limewater the limewater turns milky or cloudy white(1mark)

Question 4

What does neutralised mean?(1mark)

Answer 4

Reaction with base and acid(1mark)

Question 5

What does these salt formed?(2mark)
1)Nitric(salt)
2)Sulphuric(salt)
3)Hydrochloride acid(Salt)
4)Ethanoic(salt)

Answer 5

1)nitrate
2)Sulfates
3)Chlorides
4)Ethanoates
^(2mark)^

Question 6

What is a base?(1mark)

Answer 6

Substance that react with acid to form a salt and water(1mark)

Question 7

Why is gold Sulfate formed when Gold is added to dibulate sulfuric acid?(2mark)

Answer 7

Because Gold is not reactive with diblute acid(2mark)

Question 8

What’s the general equation forms acid and base? (1mark)

Answer 8

Acid+base->Salt+hydrogen (1mark)

Question 9

What does the reaction between acid and metal carbonates produce? (1mark)

Answer 9

Acid+Metal carbonate->
Salt carbonate dioxide +water

Question 10

What’s a solubility?(1mark)

Answer 10

Ability of a Substance to dissolve and forms a solution (1mark)

Question 11

What’s a insoluble? (1mark)

Answer 11

substance (solid) that will not dissolve in a solvent even after mixing(ex sand,water) (1mark)

Question 12

What ions make a substance acidic? (1mark)

Answer 12

H+ (1mark)

Question 13

Which ions make a substance alkaline? (1mark)

Answer 13

OH- (1mark)

Question 14

What is a dilute acid? (1mark)

Answer 14

acid which contains greater concentrations of water in it (1mark)

Question 15

What’s a universal indicator?(1mark)

Answer 15

solution or paper turns a range of colours, depending on the strength of the acid or alkali.(1mark)