15.1 The metal reactivity series

• Chem
• Secondary Education

Lesson 15.1 The metal reactivity series

13-09-2022

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• I can state the order of the reactivity series as: potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold.

GOAL

Lesson 15.1 The metal reactivity series

13-09-2022

Two of the elements in Group I (the alkali metals) of the table are Na and K. When they are added to cold water, there is a strong reaction in both cases. If a few drops of thymolphthalein solution are added to water, then it turns blue as the metal reacts.

FOCUS

Explain why Na and K are part of the group called alkali metals.

The electron configurations of:
sodium (Na) : ___________

1. 2, 8, 1
2. 2, 8, 2
3. 2, 8
4. 2, 8, 3

The electron configurations of:
potassium (K) : ___________

1. 2, 8, 1
2. 2, 8, 8, 1
3. 2, 8, 8
4. 2, 8, 8, 2

What is the "feature" of the electronic configurations of sodium and potassium that places them in Group I of the Periodic Table?

1. valence electron
2. outer shell
3. density
4. atomic radius

When sodium is added to water it melts and skids over the surface with fizzing caused by the hydrogen gas given off. Potassium reacts with a burst of energy which causes the hydrogen to burn with a purple flame.

FOCUS

Which of these metals is more reactive when added to cold water?

1. Na
2. K

Give the WORD equation for the reaction between potassium with water.

Complete the balanced symbol equation for the reaction between K and H2O:

_____ K(s)  + _____ (l)           2KOH(aq) + ____(g)

FOCUS

______ is the ease with which a chemical substance takes part in a chemical reaction.

1. Reactivity
2. Reactivity series
3. Reaction

______ is an ORDER of reactivity, giving the most reactive metal first.

1. Reactivity
2. Reactivity series
3. Reaction

Lesson 15.1 The metal reactivity series

13-09-2022

• I can state the order of the reactivity series as: potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold.

GOAL

Lesson 15.1 The metal reactivity series

13-09-2022

I THINK I NEED MORE PRACTICE ON:
1 - I can state the order of the reactivity series as: potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold.

1

I am now confident.

HOW WELL DID YOU PARTICIPATE TODAY?
1 - I need to participate more! ⚠️
2 - I have participated and I will do more next time! ☺️
3 - I did an excellent job today! 🏆

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