Question

Why is mass conserved in a chemical change?

The energy used in the chemical reaction burns up the extra matter.

The compounds are still exactly the same, they just look different.

The atoms are still there, they are just rearranged to form new compounds.

The new matter that is formed takes up the same volume as the original matter.

Answer 1

@Frostbite

Answer 2

No idea how to answer this without giving away the answer so I give you a hint:

A chemical reaction is usually written as a chemical "equation" so the two things equal each other. This could fx be:
2 Li + 2 NH3 → 2 LiNH2 + H2 (the arrow is a equals sign)

based on that info what would you guess?

Answer 3

i know its not B ...

Answer 4

right?

Answer 5

True.

Answer 6

D is out i think..

Answer 7

Getting warmer :)

Answer 8

between a and C i pick

Answer 9

this is hard... im gonna take a wild gues... C? .. ? lol

Answer 10

You are absolutely right.
Notice the number of atoms are the same on both sides of the equation

Answer 11

yes

Answer 12

thank you :)

Answer 13

No problem at all, you figured it out your self, which is for me the best. :)