Earth's atmosphere is made up of a mixture of gases. Table 1 shows information about some of the gases that are in
Earth's atmosphere.
Table 1. Gases in Earth's Atmosphere
Туре
Gas
Name
Chemical
Percentage in the
Formula
Atmosphere (%)
Major
Nitrogen
N₂
78.00
Major
Oxygen
02
21.00
Major
Argon
Ar
0.93
Carbon
Trace
Dioxide
CO₂
0.041
Trace
Neon
Ne
0.0018
Trace
Methane
CHA
0.00018
Trace
Hydrogen
H2
0.000055
Water
-
H₂O
Variable
Vapor
Which characteristic is found in ALL of the molecules that make up the gases in the atmosphere?
O The molecules are made of at least two atoms.
O The molecules are good conductors of electricity
O The molecules are made of different types of atoms
The molecules are made up of atoms with the same number of electrons.
