Final answer:
Gas cloud 1 is likely to form a star due to its temperature and density changes, while gas cloud 2 is not suitable for star formation due to its spread out nature and retained hydrogen electrons.
Step-by-step explanation:
Gas cloud 1 is likely to form a star because it meets the conditions necessary for star formation. Gas cloud 1 has a temperature that stays well below 14 million Kelvin, which helps to maintain the conditions for star formation. Additionally, gas cloud 1's volume shrinks and density increases due to gravity, which further supports the formation of a star.
On the other hand, gas cloud 2 is not likely to form a star because it does not meet the conditions required for star formation. Gas cloud 2 is spread out, with a greater volume and lesser concentration of elements. Additionally, its hydrogen atoms retain their electrons, which indicates that the conditions necessary for star formation are not present.
Based on this information, the correct match for the given conditions with each cloud is:
Gas cloud 1: (2nd condition)
Gas cloud 2: (4th condition)