Q: Fact 1: If gas is heated then that gas will expand. Fact 2: Nitrogen gas is the most abundant gas in the atmosphere. Given the two facts above, what does nitrogen do when it's heated?

pick from the following. 1. Expands; 2. boiling; 3. moves; 4. Solidifies; 5. Melts; 6. heat; 7. burning; 8. Condenses;
A:
1.