acids, alkalis and salts

Question 1

litmus paper in acidic solutions

Answer 1

red

Question 2

Litmus paper in alkaline solutions

Answer 2

blue

Question 3

phenolphthalein in acidic solutions

Answer 3

colourless

Question 4

phenolphthalein in alkaline solutions

Answer 4

pink

Question 5

methyl orange in acidic solutions

Answer 5

red

Question 6

methyl orange in alkaline solutions

Answer 6

yellow

Question 7

acid

Answer 7

source of hydrogen ions, proton donors

Question 8

alkalis

Answer 8

neutralise acids, soluble in water, sources of hydroxide ions, proton acceptors

Question 9

acid + metal

Answer 9

salt + hydrogen

Question 10

acid + metal carbonate

Answer 10

salt + carbon dioxide + water

Question 11

acid + metal oxide/hydroxide

Answer 11

salt + water

Question 12

acid + ammonia

Answer 12

ammonium salt

Question 13

moles formula

Answer 13

m = v x c

Question 14

Which metals can’t be used in MASH

Answer 14

Very reactive metals

Question 15

Salt

Answer 15

A compound formed when hydrogen is replaced by a metal or ammonium in an acid

Question 16

Why don’t we use a universal indicator in a titration

Answer 16

It would cause a gradual colour change

Question 17

Conc units

Answer 17

mol dm^-3

Question 18

When the volume given is in cm^3

Answer 18

v X c /1000