How does a balanced chemical equation show the conservation of mass? A. It shows that the number of each type of atom stays the same.
B. It shows that the mass of the products is greater than the mass of
the reactants when a reaction increases the moles of substances.
C. It shows that the total number of moles of substances stays the
same.
D. It shows that the mass of the reactants is greater than the mass

A. It shows that the number of each type of atom stays the same.

Explanation:

Though you may see a change in the way they are arranged, the same  number of atoms are present before and after. Balanced chemical equations show equal numbers of  atoms of each element on each side of the equation.

Just tell them

Explanation:

you don't need to be scared to tell your parents because they will always support you :-)

And it is a normal thing to laugh probably because of joy or they're probably shock about your decision

anywho,if the laugh or not it is your decision to let your fear stop you from achieving your dreams or become brave and let people laugh at you until you are successful :)

anyways good luck!