Across
- 3. a chemical _____ is found in a column on the periodic table
- 4. Dmitri _____ invented the modern periodic table
- 5. negatively charged particle in an atom
- 10. elements on the left side of the periodic table
- 11. _____ gases include neon and argon
- 13. two or more elements chemically joined
- 14. the smallest unit of an element
- 15. core of the atom
Down
- 1. Ag for silver is an example of an element _____
- 2. _____ earth metals are found in the second column of the periodic table
- 4. elements that have properties metals and non metals
- 6. neutral particle in the atoms nucleus
- 7. positively charged particle in an atom
- 8. pure substance that can not be broken down to simpler substances
- 9. elements found in the upper right corner of the periodic table
- 12. chemical family that includes fluorine and iodine