Before a bond breaks in a chemical reaction, what happens?

a. energy is absorbed.

b. neutrons in the nucleus expand.

c. an atom loses its protons.

d. the products get larger.

Which substances have the lowest melting points: ionic covalent, or metallic

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.