Across
- 1. Two or more atoms bonded together
- 3. Number Number of protons in an atom's nucleus
- 5. An atom with a positive or negative charge
- 6. The center of an atom
- 11. Outer shell electrons involved in bonding
- 12. Group 1 elements in the periodic table
- 13. Elements that are good conductors of heat and electricity
- 16. A particle in the nucleus with no charge
- 17. Gas Group 18 elements known for their lack of reactivity
- 19. Atoms of the same element with different numbers of neutrons
- 21. Mass Total number of protons and neutrons in an atom
- 22. A positively charged particle in the nucleus
- 24. Elements with properties of both metals and nonmetals
Down
- 2. Substance made of two or more different elements
- 4. Metal Elements found in groups 3-12 of the periodic table
- 7. A pure substance consisting of one type of atom
- 8. Energy levels where electrons are found
- 9. Table Chart organizing all known elements
- 10. A negatively charged particle orbiting the nucleus
- 14. Configuration Distribution of electrons in an atom's shells
- 15. Elements that are poor conductors of heat and electricity
- 18. Group 17 elements in the periodic table
- 20. Horizontal rows in the periodic table
- 23. Vertical columns in the periodic table
- 25. The smallest unit of matter