Metals + water Year 8

Last updated about 2 hours ago

7 questions

Note from the author:

Instructions

Group I

3

5

1

6

9

Last updated about 2 hours ago

7 questions

Note from the author:

This is a from to ensure that you do not miss any specification points 1.13-1.20

Instructions

This is a from to ensure that you do not miss any specification points 1.13-1.20

Group I

3

5

1

1

6

 The metals all ,_________  float and produce _____________ , the reactivity ______________  down the group.

Metal reactivity
Put the metals in order from most to least reactive

Draggable item		Corresponding Item
(Rb) 2Rb(s) + 2H₂O(l) → 2RbOH(aq) + H₂(g)		Floats, fizzes gently, melts, slow H₂ release.
(Cs) 2Cs(s) + 2H₂O(l) → 2CsOH(aq) + H₂(g)		Floats, melts, fizzes rapidly, yellow flame, H₂ ignites.
(Na) 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)		Ignites instantly, lilac flame, melts, moves quickly, violent
(K) 2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)		Explosive, red-violet flame, fast, exothermic, may splatter.
Li(s) + H₂O(l) → LiOH(aq) + H₂(g)		Extremely violent, explosion, bright flash, blue flame, instant ignition.

A

B

C

D

A

B

C

D

 The metals all ,_________  float and produce _____________ , the reactivity ______________  down the group.

Metal reactivity
Put the metals in order from most to least reactive

Zinc

potassium

Magnesium

Group 1 Metal + water reactions
Place the metals from most reactive to least reactive

Li(s) Floats, fizzes gently, melts, slow H₂ release.

Na(s) Floats, melts, fizzes rapidly, yellow flame, H₂ ignites.

K(s)	I.gnites instantly, lilac flame, melts, moves quickly, violent

Rb(s) Explosive, red-violet flame, fast, exothermic, may splatter. 

Cs(s) Extremely violent, explosion, bright flash, blue flame, instant ignition.

Group 1 Metal + water reactions
Lithium (Li)		
Sodium 	
Potassium 	.
Rubidium 	
Caesium 	

(Rb)	2Rb(s) + 2H₂O(l) → 2RbOH(aq) + H₂(g)

Floats, fizzes gently, melts, slow H₂ release.

(Cs)	2Cs(s) + 2H₂O(l) → 2CsOH(aq) + H₂(g)

Floats, melts, fizzes rapidly, yellow flame, H₂ ignites.

(Na)	2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)

Ignites instantly, lilac flame, melts, moves quickly, violent

(K)	2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)

Explosive, red-violet flame, fast, exothermic, may splatter.

Li(s) + H₂O(l) → LiOH(aq) + H₂(g)

Extremely violent, explosion, bright flash, blue flame, instant ignition.

The periodic table

A

B

C

D

The periodic table

A

B

C

D

Match the statement to the alkali metal.
Some statements apply to more than one metal.

Focus simulation alkali metals.

K

Li

Na

Hardest to cut

floated on water

did not melt

Melted (formed a ball)

Easiest to cut

Formed a lilac flame

Reacted fastest

Reacted slowest