Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

[EX Q]: Question: What change the physical properties of solvents? Answer: solutes
[EX A]: Solutes change the physical properties of solvents. They lower the freezing point and raise the boiling point of solvents.

[EX Q]: Question: Which type of plankton make food via photosynthesis? Answer: phytoplankton
[EX A]: Phytoplankton are "plant-like" plankton. Since they make food by photosynthesis, they live in the photic zone. Most are algae.

[EX Q]: Question: What burns to produce the white light in fireworks displays? Answer: magnesium in air
[EX A]:
The white light in fireworks displays is produced by burning magnesium in air, which contains oxygen. What compound is formed?.