QUANTITIVE CHEMISTRY

Question 1

in conservation of mass, why does mass seem to increase?

Answer 1

because one of your reactants is a gas

Question 2

in conservation of mass, why does mass seem to decrease?

Answer 2

because one of your products is a gas

Question 3

what can the gas particles do if they’re not in a sealed container?

Answer 3

the gas can either come from the air, or float off into the air

Question 4

what is combustion?

Answer 4

a chemical reaction including oxygen