Teacher:Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
Teacher: Now, understand the problem? Solve this instance: Question: In combination or synthesis reactions, two chemical species combine to produce a what? Answer: new compound
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
In combination or synthesis reactions, two chemical species combine to produce a new compound. The general expression for a combination reaction is:.