Across
- 4. A group of atoms chemically bonded together
- 7. Easily broken
- 8. A substance made up of two or more atoms bonded together
- 9. An element that is highly non reactive
- 11. A grid arrangement of all elements known
- 13. The number which determines the order of the elements in the periodic table
- 16. Tending not to chemically react with other substances
- 18. A combination of substances that can be physically separated
- 20. to chemically interact with other substances
Down
- 1. When atoms move around to form a new substance
- 2. A single substance without anything mixed in
- 3. Able to be pressed or hammered into a shape without breaking
- 5. A row in the periodic table
- 6. A column in the periodic table
- 10. A repeating arrangement of atoms in a solid
- 12. A substance made up of only one type of atom
- 14. A shiny element that conducts electricity and heat
- 15. An attractive force that holds two atoms together
- 17. The smallest particle of an element
- 19. A metal that typically doesn't conduct electricity or heat