This is an IF, THEN, BECAUSE statement. I'll put an example and then answer the question.
REMEMBER: I hypothesis is an educated guess
Example: IF carl spills juice on the carpet
THEN his mother will punish him
BECAUSE she's mad he spilled juice on the carpet
Answer: IF heat is added to a system during a phase change
THEN the temperature will raise
BECAUSE you are adding heat
Hope this helps!
