A pink colour in the test tube indicates a site where reduction of H⁺ is occurring. 

The presence of bubbles in the test tube indicates a site where reduction of H⁺ is occurring.

A blue colour in the test tube indicates a site where reduction of H⁺ is occurring. 

There is no way to detect reduction of H⁺ in this experiment. 

A blue colour in the test tube indicates a site where reduction of O₂ is occurring. 

A pink colour in the test tube indicates a site where reduction of O₂ is occurring. 

The presence of bubbles in the test tube indicates a site where reduction of O₂ is occurring. 

There is no way to detect reduction of O₂ in this experiment. 

Register in Moodle. 

Use the make-up lab registration link on the chemistry lab web page.

Mail the lab coordinator. 

There is no need to register for make-up labs. 

Mail the course coordinator.

Give your completed report to your demonstrator at the next lab class.

Submit your report to the chemistry office before the next lab class. 

Upload your report to Moodle within 24 hours of completing your lab class. 

Give your completed report to your demonstrator before you leave the lab class. 

The longer threaded section

Either side can be loaded into the lower section of the tensile unit

The shorter threaded section

3 mm/min

1 mm/min

10 mm/min

5 mm/min