1)describe in a step by step manner how you determined the identity of the two unknowns. discuss both what you determined the unknowns to be and the method that you used to find them.
2)use your knowledge of collision theory to explain the results of your experiments in this laboratory.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.