I have multiple questions. I need them ASAP pls. 1)-Air is a mixture because its composition (or proportions) can change. Why is this statement right?
2)-Air is a mixture because it is odorless at low temperatures. Why is this statement wrong?
3)-Air is a mixture because it is colorless when unpolluted. Why is this statement wrong?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

All forces cause motion? true or false

What is bromine+calcium iodide--> calcium bromide +iodine balanced