Reactivity of Metals

Question 1

Reactivity down a group for metals

Answer 1

metals reactivity increases as you go down the group as the outer electron is lost more easily

Question 2

Reactivity down a group for non-metals

Answer 2

metals reactivity decreases as you go down the group as the extra electron is more difficult to gain

Question 3

Reactivity of metals across a period

Answer 3

reactivity decreases due to an increase ionization energy. transition metal are generally the least reactive than main group metals

Question 4

what do metals react in water to produce

Answer 4

metal hydroxide and hydrogen

Question 5

Group 1 formulae for metals + water

Answer 5

2(M)+(aq) + 2H20 –> 2(M)OH (aq) + H2 (g)

Question 6

Group 2 formulae for metals + water

Answer 6

(M) 2+ + 2H20 –> M(OH)2 (aq) + H2 (g)

Question 7

what do metals react in acid to produce

Answer 7

salt + hydrogen

Question 8

formulae for metals + acid

Answer 8

(M) 2+ + 2H20 –> M(OH)2 (aq) + H2 (g)

Question 9

Hydrochloric acid + metal produces

Answer 9

metal chloride + hydrogen

Question 10

Hydrochloric acid + metal produces

Answer 10

metal sulfate + hydrogen

Question 11

Flame colors Li+

Answer 11

red

Question 12

Flame colors Na+

Answer 12

yellow

Question 13

Flame colors K+

Answer 13

purple

Question 14

Flame colors Ca2+

Answer 14

orange

Question 15

Flame colors Cu2+

Answer 15

green

Question 16

Applications of Na2SO4

Answer 16

Cleaning products soapy laundry e.g. dish detergent

Question 17

Applications of MgS04

Answer 17

external= fertilizer in agriculture mg stops yellow leaves
internal= as a laxatives’

Question 18

Applications of BaS04

Answer 18

toxic when soluble
insoluble forms used in x-ray