Alchemy was practiced

a: middle ages
b: modern chemists
c: renaissance scientist

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water

Describe the interaction that occurs between two objects with the same electrical charge.