Does everything that you can see fit the definition for matter

If you want to create an electrical current, which situation would produce a solution capable of this

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.