05. Heating Cu

What happens when we heat copper metal in air?

This video shows copper metal (Cu) reacting with sulfur (S) to make copper sulfide (CuS)

Activity: Reacting Copper metal with oxygen

Procedure:

a Fold the copper foil into an envelope as shown in the diagram.

b Weigh the envelope and record the mass.

c Wear eye protection and light the Bunsen burner.

d Hold the envelope in the tongs and heat strongly in the Bunsen flame for 5 minutes. You will need to have the air hole fully open.

e Place the envelope on the heat resistant mat and allow to cool. This will take a few minutes.

f Weigh the envelope and record the mass

g Open the envelope and compare the inside to the outside surface.

method adapted from Nuffied Science

Results

Quantitative result - how has the mass of the Cu changed after reacting with oxygen?

Qualitative result - how has the appearance of the Cu changed when you heated it?