Us: what is a valence electron?

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

Why is the melting of ice a physical change ?

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?