Across
- 1. a thing that is composed of 2 or more elements
- 6. The same number as protons and Neutrons
- 7. The coloms on the periodic table
- 8. a thin coating of metal
- 9. a reaction acomponied by the relese of heat
- 10. a part of an atom with a neutral charge
- 11. a reaction acomponied by the absorbtion of heat
- 14. electrons on the outermost orbital
- 18. smallest unit of any form of matter
- 21. rings around the necleus that electrons move on
- 22. Russion chemist who created the periodic table
- 25. a mererial normaly hard, shiny, malleable, and ductile
Down
- 2. an element whose properties are intermediate between metals and solid nonmetals
- 3. any gaseous element in group 18 of the periodic table
- 4. mass is not created or destroyed in a chemical reaction
- 5. innermost part of an atom that contains protons and neutrons
- 12. an element or substence that is not a metal
- 13. positively charged part of an atom
- 15. Negatively charged part of an atom
- 16. An abriviation on an elements name
- 17. the rows on the periodic table
- 19. the things that are created in a chemical reaction
- 20. a substence that takes part in a chemical reaction
- 23. a group of elements that are bonded
- 24. cannot be broken down or chemically intercinverted