They are called groups or family. Hope this helps
Answer:
-Warm air sinks, creating an area of low pressure.
Explanation:
Heat will weigh more, than cool air!
Answer:
Solute concentration will afect the rate of a chemical reaction, because you must work with molarity
Explanation:
I think that solute mass may be it can affect the rate of reaction, if you have more mass in a solute, you will also have more moles.
If you want to know more, you have to consider temperature in the reaction and the presence of catalysts. They all, affect reactions.
It would emit energy in most of the cases in form of light
Answer: Luster (happy to help)
Explanation: Luster is the property of minerals that indicates how much the surface of a mineral reflects light.