unit 11 reactivity of metals (observations)

Question 1

potassium react with oxygen

Answer 1

lilac flame
white smoke

Question 2

sodium react with oxygen

Answer 2

golden yellow flame
white smoke

Question 3

calcium react with oxygen

Answer 3

brick red flame
white solid

Question 4

magnesium react with oxygen

Answer 4

bright white light
white solid

Question 5

aluminium react with oxygen

Answer 5

white sparks

Question 6

zinc react with oxygen

Answer 6

burns moderately
(yellow when hot, white when cooled)

Question 7

iron react with oxygen

Answer 7

yellow sparks
black solid

Question 8

lead react with oxygen

Answer 8

orange solid when hot
yellow solid when cooled

Question 9

copper react with oxygen

Answer 9

black solid formed

Question 10

mercury react with oxygen

Answer 10

red powder formed

Question 11

silver react with oxygen

Answer 11

no observable change

Question 12

platinum/ gold react with oxygen

Answer 12

no observable change

Question 13

potassium react with water

Answer 13

lilac flame
melts into a silvery ball
fizzes

Question 14

sodium react with water

Answer 14

silvery ball
fizzes floats

Question 15

calcium react with water

Answer 15

sink
colourless gas

Question 16

magnesium react with steam

Answer 16

burns with bright white light

Question 17

aluminium react with steam

Answer 17

white solid forms

Question 18

zinc rect with steam

Answer 18

glows
(yellow when hot, white when cooled)

Question 19

iron react with steam

Answer 19

glow red
black solid formed

Question 20

lead react with water/steam

Answer 20

no observable change

Question 21

copper react with water/steam

Answer 21

no observable change

Question 22

silver react with water/steam

Answer 22

no observable change

Question 23

platinum/ gold react with water/steam

Answer 23

no observable change

Question 24

calcium react with dil HCl

Answer 24

bubbles
metal disappeared
warm (exothermic)