Across
- 2. Where the electrons are found
- 3. A big chart that shows all the elements.
- 6. The number above the symbol on the periodic table
- 8. The tiny building block of everything. All materials are made of atoms.
- 13. Subatomic particle with a charge of 0
- 14. The middle of an atom
- 15. A substance made when two or more different elements are joined together.
- 17. A substance made of only one type of atom.
- 18. A one or two letter code that represents an element (e.g., O for oxygen).
Down
- 1. The link that holds atoms together in molecules and compounds.
- 4. Subatomic particle with a charge of -1
- 5. The number below the symbol on the periodic table
- 7. Two or more atoms joined together.
- 9. A combination of symbols and numbers that shows which atoms are in a compound (e.g., H₂O).
- 10. The rows on the periodic table
- 11. Two or more substances that are not chemically joined and can be separated.
- 12. the columns on the periodic table
- 16. Subatomic particle with a charge of +1
