Reactivity Series of Metals

Question 1

Reactivity series

Answer 1

Placing metals in order of high vigorously they react

Question 2

How can we place metals in the reactivity series?

Answer 2

by observing and recording how different metals react in:
- oxygen 💨
- water 💧
- with other metal salt solutions 🪙🧂

Question 3

Oxygen concentration in air

Answer 3

20%

Question 4

Another word for burning

Answer 4

Combustion

Question 5

Apparatus for reactions of metals in oxygen

Answer 5

• crucible lid
• crucible🪣
• metal🪙
• pipe clay triangle 🥣⚠️
• tripod⚠️ 🎧
• heat 🔥
• heat-proof mat 🚫 🔥

Question 6

Does iron reacts with oxygen?

Answer 6

Yes

Question 7

Observations, iron reacting in oxygen

Answer 7

Grey wool burns with orange Sparks, black solid forms

Question 8

Does zinc react with oxygen?

Answer 8

Yes

Question 9

Zinc reacting with oxygen observations

Answer 9

Grey solid burns, yellow solid forms turns white when cool

Question 10

Does copper react with oxygen?

Answer 10

Yes

Question 11

Copper reacting with oxygen observations

Answer 11

• Red brown solid glows red
• black layer forms

Question 12

Does magnesium react with oxygen?

Answer 12

Yes

Question 13

Magnesium reacting in oxygen observations

Answer 13

• Grey solid
• burns with bright white light
• white ash forms 

Question 14

Does aluminium react with oxygen?

Answer 14

Yes

Question 15

Aluminium reacting with oxygen observations

Answer 15

Sheets of aluminium do not burn easily, however, powdered aluminium Burns white solid forms

Question 16

Do sheets of aluminium burn

Answer 16

Not easily

Question 17

What form of aluminium is used when reacting with oxygen?

Answer 17

Powdered aluminium

Question 18

Does calcium reacts with oxygen?

Answer 18

Yes

Question 19

Calcium reacting with oxygen observations

Answer 19

• Grey solid
• burns with brick red flame
• white solid forms

Question 20

Which metal reacts fastest with oxygen?

Answer 20

Magnesium

Question 21

Which metal is hardly react with oxygen?

Answer 21

• Zinc
• aluminium
• copper

Question 22

Is experiment, “reacting with oxygen” a good experiment to determine order of reactivity?

Answer 22

No

Question 23

Why are sodium and potassium, only heated in air using strict safety precaution during experiment, metals reacting with oxygen?

Answer 23

⬆️ dangerous ⬆️

Question 24

General equation for metal burning in oxygen

Answer 24

Metal ➕ oxygen ➡️ metal oxide

Question 25

Why do metals gain mass when reacting with oxygen?

Answer 25

They form an oxide

Question 26

How would you ensure all metal has reacted in experiment, “metal burning in oxygen”?

Answer 26

Heat to constant mass

Question 27

Metals which react easily with cold water

Answer 27

• potassium
• sodium

Question 28

Method of reacting K and Na with cold water

Answer 28

• place small piece of metal in water
• note all observations
• test solution with pH paper

Question 29

Observations for Na (sodium) reacting with cold water

Answer 29

• Floats on surface
• metal melts and forms a silvery ball
• moves around surface of water
• gives off a gas/fizzes
• heat is released
• disappears and forms a colourless solution

Question 30

Observations for K (potassium) reacting with cold water

Answer 30

• Burns with a lilac flame
• floats on surface
• metal melts and forms a silvery ball
• moves around surface of water
• gives off a gas/fizzes
• heat is released
• disappears and forms a colourless solution

Question 31

colour of pH of resulting solutions of Na and K reacting with cold water

Answer 31

Blue/ purple

Question 32

What metal reacts the fastest with cold water out of Na and K

Answer 32

Potassium

Question 33

pH of resulting solutions of Na and K reacting with cold water

Answer 33

12 - 14

Question 34

Why are Na and K stored in oil?

Answer 34

To prevent reaction with moisture and oxygen in the air

Question 35

Cutting Na and K

Answer 35

• soft - easily cut
• shiny when freshly cut
• tarnish rapidly in air