Law of Conservation of Mass

2. - To make equal; in chemistry, ensuring the same number of atoms on both sides of the equation.
3. - A scientific principle that describes a consistent natural phenomenon.
4. - The amount of space an object occupies.
8. - To keep constant; in chemistry, preserving mass during reactions.
10. - The amount of matter in an object.
14. - Substance present at the start of a chemical reaction.
16. - Capacity to do work or produce change, involved in reactions.
17. - A process in which substances change to form new substances.
18. - A process of transformation, such as in a chemical or physical state.
19. - A representation of a chemical reaction using symbols.
20. - The smallest unit of an element.

1. - A group of atoms bonded together.
5. - Anything that has mass and occupies space.
6. - Describes a system where no matter enters or leaves.
7. - A connection between atoms in a molecule.
9. - A substance made of only one kind of atom.
11. - A small number in a chemical formula indicating the number of atoms in a molecule.
12. - A distinct form of matter, like solid, liquid, or gas.
13. - Substance formed as a result of a chemical reaction.
15. - A number placed in front of a chemical formula to balance an equation.