Across
- 4. forms positive irons
- 5. he made the table
- 7. thin coat of gold, silver, or other metal
- 8. mixture of metals and nonmetals
- 9. how many rings
- 11. column of the elements of the periodic table of the chemical elements
- 12. consealed reaction
- 14. of conservation of mass can be changed from one form to another
- 17. neon, argon, krypton, xenon, radon
- 19. negative electron
- 21. something composed of two or more seperate elements
- 23. Group of atoms that cannot be broken down
Down
- 1. the electrons that exist in the outermost orbital
- 2. abbreviation of element
- 3. in each of these they increase from left to right
- 6. mass of a atomic particle
- 7. what was made after the reactions
- 10. center of the atom
- 13. outside reaction/ hot
- 15. smallest particle in a chemical element
- 16. a substance that takes part in and undergoes charge during a reaction
- 17. neutral electron
- 18. smallest unit of any form of matter
- 20. positive electron
- 22. rings around the nucleus