Determine which type of property each statement describes by typing "physical" or "chemical" in the blank. hydrogen is a colorless, tasteless, and odorless gas. hydrogen is very combustible in the presence of oxygen. hydrogen is very reactive with most elements. hydrogen is the least dense of all elements.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.