So before i have to do the science fair i have to write 5 questions that will lead me to a hypothesis my project is which substance melts ice the fastest can you me with that? sorry for asking im confused and i cant think of anything!

If one fission reaction of a uranium-235 atom produced two neutrons, how many neutrons would be released if the chain reaction occurred three more times?

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

Name 3 types of energy you see being used as you look around a classroom