What is the correct name for a compound with two copper atoms and one oxygen atom?
copper (i) oxide
copper (1) oxide
copper (2) oxide
copper (ii) oxide

copper (I) oxide

Explanation:

Copper (I) oxide or cuprous oxide (Cu2O) is a red or yellow chemical compound depending on the size of its particles. It is insoluble in water and organic solvents

It is found as the mineral cuprite in some red rocks. When exposed to oxygen, copper oxidizes naturally to copper (I) oxide, although very slowly. In the laboratory, the process can be accomplished in a much shorter time using high temperature or high oxygen pressure. With heating, it will form copper (II) oxide.

The formation of copper oxide (I) is the basis of the Fehling test and the Benedict reaction for the reduction of sugars that reduce a copper (II) salt in alkaline solution, giving a precipitate of Cu2O.

distance, luminosity, brightness, radius, chemical composition, and temperature

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