In chemical reactions, are bonds of reactants formed or broken? what about the products, are those formed or broken?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases