What family or group is neon in?
like a halogen, alkali metal or something.
(im doing a chemistry worksheet on neon and i suck at chemistry.)

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2