Answer:
Yes
Explanation:
Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei. Everything else about them is the same.(If you want more explanation tell me).
The answer would be Rocks, metals, hydrogen compounds, hydrogen and helium, all in gaseous form.
It has to be D. the time needed to boil the water decreased
Any colloid consisting of a solid dispersed in a gas is called a smoke. A liquid dispersed in a gas is referred to as a fog. So the answer would be smoke
The molecular weight of the substance.