Which is a chemical property of oxygen? 1.It reacts with iron to form rust.
2.It is a gas at room temperature.
3.It expands when heated.
4.It combines to form O 2 molecules.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

Which of these is an intensive property of a substance