Across
- 4. - A combination of chemical symbols and numbers to represent a substance.
- 10. - chemical equation with the same number of atoms of each element on both sides of the equation; supports LOCO mass
- 11. - A process that produces chemical change, resulting in new substances that have properties different from those of the original substances.
- 12. - discovered the law of conservation of mass and defined an element as a basic substance that could not be further broken down by the methods of chemistry
Down
- 1. - States that mass is neither created nor destroyed, therefore the mass of the products of a chemical change is always the same as the mass of the reactants.
- 2. - A substance that exists before a chemical reaction begins.
- 3. - A number in front of a chemical compound or symbol in an equation that indicates how many molecules of each compound or element are involved in a reaction.
- 5. - A system in which matter can enter from or escape to the surroundings. A chemical reaction that occurs in a container without a lid/sealing mechanism.
- 6. - A shorthand form of writing what reactants are used and what products are formed in a chemical reaction.
- 7. - A substance that forms as a result of a chemical reaction.
- 8. - A number written slightly below and behind a chemical symbol that shows how many atoms of an element are in a compound.
- 9. - A system in which no matter is allowed to enter or leave. A chemical reaction that occurs inside a sealed, airtight container.