Across
- 4. A series of letters or and symbols that show what substances make up a particular chemical element or compound.
- 6. A substance consisting of atoms of two or more elements.
- 9. A group of atoms bonded together.
- 10. 2 hydrogen atoms and 1 oxygen atom chemically joined together.
Down
- 1. Something that cant be broken down into further substances. All of them are on the periodic table.
- 2. The formula for water.
- 3. The name given to a vertical column in the periodic table.
- 5. The smallest unit of any chemical element.
- 7. The name given to horizontal row in the periodic table.
- 8. An element that forms positive ions.