Elements that are arranged in the same column on the periodic table belong to the same family of elements. the atoms of elements in the same family all have the same number of valence in their outer shell.
a. protons
b. electrons
c. neutrons
d. all of these

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

Name atleast 3 type of energy associated with the microwave