Abundant Atmospheric Gases
NEN
Nitrogen, Ny
ОНО
Oxygen, Oz
Greenhouse Gases
Which of the atmospheric gases to
the left is considered a compound?
0 0 0
Carbon Dioxide, CO2
(select all that apply)
Water, H20
Methane, CHA
NENO
Nitrous Oxide, N30
Ozone. O

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.