instruction:
In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
question:
Question: Lead has a _____ melting point than steel because it has more branching. 
 Answer: lower
answer:
The more branching there is in isomers, the lower the boiling and melting points are.


question:
Question: Quent increases the energy of a liquid. He notices that the particles in the liquid 
 Answer: speed up
answer:
As the liquid particles lose energy, their movement slows down even more. As their movements become slower and slower, the attractive forces between become stronger.


question:
Question: You would find worse air near a 
 Answer: factory
answer:

More pollutants mean poorer air quality.