A puddle of liquid water on the ground eventually disappears as the molecules enter the air in the gas phase. Did the water molecules vaporize or evaporate? Explain how you know.

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.