Atom Ions and Compounds

Question 1

What charge do group 1 ions form

Answer 1

+1

Question 2

What charge do group 2 ions form

Answer 2

+2

Question 3

What charge do group 3 ions form

Answer 3

+3

Question 4

What charge do group 4 ions form

Answer 4

when they ionise they for either a +4 or a -4 charge. This is because they have an equal chance of forming a positive and a negative charge therefore they don’t have a specific charge.

Question 5

What charge do group 5 ions form

Answer 5

-3

Question 6

What charge do group 6 ions form

Answer 6

-2

Question 7

What charge do group 7 ions form

Answer 7

-1

Question 8

what charge do group 8 ions form

Answer 8

noble gases don’t loose or gain any electrons as their valence shells are already full. therefore they don’t ionise and for charges.

Question 9

what is the chemical formula for Copper (II)

Answer 9

Cu^2+

Question 10

what is the chemical formula for Silver (I)

Answer 10

Ag+

Question 11

what is the chemical formula for Zinc (II)

Answer 11

Zn^2+

Question 12

what is the chemical formula for Mn(VI)

Answer 12

Mn^6+

Question 13

what is the chemical formula for Mn(II)

Answer 13

Mn^2+

Question 14

what is the chemical formula for Chromium (VI)

Answer 14

Cr^6+

Question 15

what is the chemical formula for Chromium (III)

Answer 15

Cr^3+

Question 16

what is the chemical formula for Iron (II)

Answer 16

Fe^2+

Question 17

what is the chemical formula for Iron (III)

Answer 17

Fe^3+

Question 18

what is the chemical formula for Pb (IV)

Answer 18

Pb^4+

Question 19

What are molecular ions

Answer 19

ions made up of more than one element

Question 20

what is the chemical formula for Ammonium

Answer 20

NH4+

Question 21

what is the chemical formula for Hydroxide

Answer 21

OH-

Question 22

what is the chemical formula for Nitrate

Answer 22

NO3-

Question 23

what is the chemical formula for Hydrogen Carbonate

Answer 23

HCO3-

Question 24

what is the chemical formula for Carbonate

Answer 24

CO3-

Question 25

what is the chemical formula for Sulphate

Answer 25

SO4^2-

Question 26

what is the chemical formula for Dichromate

Answer 26

Cr2O7^3-

Question 27

what is the chemical formula for Phosphate

Answer 27

PO4^3-

Question 28

Which 5 compounds form a white precipitate

Answer 28

• Silver Chloride AgCl (s)
• Silver Sulphate Ag2SO4 (s)
• Silver Carbonate Ag2CO3 (s)
• Barium Sulphate BaSO4 (s)
• Barium Carbonate BaCO3 (s)

Question 29

solids always form a…

Answer 29

precipitate

Question 30

aqueous substances always form a..

Answer 30

solution

Question 31

solvents always form a….

Answer 31

colour

Question 32

which 2 compounds form a colourless solution

Answer 32

• Magnesium sulphate MgSO4 (aq)
• Barium Hydroxide Ba(OH)2 (aq)

Question 33

which compound forms a yellow precipitate

Answer 33

Silver Iodide AgI (s)

Question 34

which compound forms a cream precipitate

Answer 34

Silver Bromide AgBr (s)

Question 35

which compound forms a pale green solution

Answer 35

Chlorine Water Cl2 (aq)

Question 36

which compound forms an orange solution

Answer 36

Bromine Water Br2 (aq)

Question 37

which compound forms a brown solution

Answer 37

iodine water I2 (aq )

Question 38

which compound forms a pale green colour

Answer 38

Cl2 dissolved in an organic solvent

Question 39

which compound forms a orange colour

Answer 39

Br2 dissolved in an organic solvent

Question 40

which compound forms a violet colour

Answer 40

I2 dissolved in an organic solvent