Metals

• Physics
• Secondary Education
• Age 13

Sound

T7. Metals

October 23, 2025

We are learning to:

• Describe the Group I alkali metals, lithium, sodium and potassium, as relatively soft metals with general trends down the group, limited to:
• (a) decreasing melting point
• (b) increasing density 
• (c) increasing reactivity
• Predict the properties of other elements in Group I, given information about the elements

Group I elements

What would you expect if you drop a piece of sodium metal into a beaker of water?

Activity 1 - Table and yes/no questions

Activity 1 - Question 3

Any questions?

Activity 1 - Question 4

Activity 2 - Question 1

Any questions?