Conservation of mass

What happens to atoms in a chemical reaction?

A: The atoms chemically bond together and they could become a new compound. The atoms will rearrange.

Potassium iodide + lead nitrate = Potassium nitrae + lead iodide

Calcium carbonate + Oxygen = Calcium oxide + Carbon dioxide

Calcium oxide + Water = Calcium hyrodroxide

Calcium hyrdroxide + Carbon dioxide = Calcium carbonate + Water

What does the conservation of mass mean?

A: Atoms are the smallest particles of an element that can take part in a chemical reaction. During any chemical reaction no particles are created or destroyed; the atoms are simply rearranged from the reactants to the products

Mass is never lost or gained in chemical reactions. We say that mass…