Which of the following statements are true of chemical reactions?

Question

a) The number and types of atoms are the same in the products and the reactants.

b) Different isotopes of the same element behave similarly.

c) Only the valence electrons are involved.

d) New elements are often formed.

Answer 1

D

Answer 2

i actually think all but c is true

d doesnt make sense cus the word often

so a or b?

**** idk!

Answer 3

I think it is "B" don't ask me Y