What is the total number of protons contained in two oxygen atoms? I think it's 16, but I need another opinion.

Does the energy in a solid increase or decrease when changing to a liquid?

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.