Acids Bases And Neutralisation

Question 1

What is an acid?

Answer 1

• contain hydrogen H+ ions plus another material
• It is also a proton donor

E.g. H Cl

Question 2

What is an alkali?

Answer 2

• bases that dissolve in water
• proton acceptor

the solution contains hydroxide OH - ions

Question 3

Names the 4 common indicators?

Answer 3

Phenolphthalein acid: colourless, alkaii: pink
Methyl orange acid:red alkali: yellow
Universal indicator rainbow Acid: red alkali: purple

Litmus paper acid: red alkali: blue

Question 4

What indicator is used to measure pH?

Answer 4

Universal indicator
pH0. Acid. Red
pH7. Neutral green
pH14 alkali. Purple

Question 5

H+ ions And OH- ions join to make?

Answer 5

Water. H2O

Question 6

Acid + alkali —>

Answer 6

Acid + alkali —> salt + water

Question 7

What is a base?

Answer 7

metal oxide
or
metal hydroxide

Question 8

Acid + base—>

Answer 8

Acid + base–> salt + water

Question 9

Acid + carbonate —>

Answer 9

Acid + carbonate –> salt + water + CO2