Across
- 2. A pure substance that forms when two or more elements are held together by a chemical bond; Every molecule of a compound is the same
- 4. The scientific principle that matter is neither created or destroyed during a chemical change
- 6. In a solution, the substance that does the dissolving
- 8. A group of two or more atoms held together by chemical bonds
- 10. Total mass of Protons and Neutrons in an atom; measured in atomic mass units; the number of protons+ neutrons
- 12. A combination o two or more substances that are not chemically combined
Down
- 1. A mixture in which substances are distributed evenly (You cannot see the different parts)
- 3. The elements or compounds produced by a chemical reaction
- 5. A pure substance that is made up of only one kind of atom
- 7. In a solution, the substance that dissolves
- 9. A homogeneous mixture in which one substance completely dissolves in another substance
- 11. An atom that has lost or gained electrons and therefore has an electrical charge