Y10T1W10L3 Group I: The Alkali Metals

Y10T1W10L2 Group I: The Alkali Metals

Open Ended

Starter: Why are elements grouped together?

Extension: Think about their atomic structure and the bonding what would result from their reactions.

Multiple Choice

How many outer shell electrons do the alkali metals have?

• 1

• 2

• 4

• 7

Multiple Choice

What type of ions are formed by the alkali metals?

• +4

• -1

• -2

• +1

Multiple Choice

What is the correct order of reactivity of alkali metals, from least to most reactive?

• Na, Li, K

• K, Na, Li

• Li, Na, K

• Li, K, Na

Open Ended

Task One: Alkali Metals

1.Why are the metals stored in sealed glass jars with oil?

2.Why do the metals have darker appearances on their outside and are lighter inside when cut?

3.How does the softness of each metal change as you move down the group?

4.Describe the trend in reactivity as you move down the group.

Multiple Choice

What are the products of the reaction between an alkali metal and water?

• A metal oxide and oxygen

• A metal oxide and hydrogen

• A metal hydroxide and oxygen

• A metal hydroxide and hydrogen

Multiple Choice

What are the products of the reaction between an alkali metal and air?

• A metal oxide and oxygen

• A metal oxide and hydrogen

• A metal oxide

• A metal hydroxide and hydrogen

Open Ended

Task 2: Alkali Metal Reactions

1. Write balanced chemical equations (not word equations) for:

a)Lithium reacting with oxygen

b)Potassium reacting with water

c)Sodium reacting with chlorine

2. Describe the test for hydrogen gas?

Multiple Choice

True or False

Alkali metals are so reactive, they must be stored in oil

• True

• False

Multiple Choice

True or False

Alkali metals need to be heated to react with air

• True

• False

Multiple Choice

True or False

Sodium lights with a purple flame when it reacts with water

• True

• False

Multiple Choice

True or False

All alkali metals float in water

• True

• False

Multiple Choice

True or False

Hydrogen is produced when an alkali metal reacts with water

• True

• False

Multiple Choice

True or False

Universal indicator turns blue when added to water in which an alkali metal has reacted

• True

• False

https://www.physicsandmathstutor.com/chemistry-revision/igcse-cie/periodic-table/