Across
- 1. compound that are formed when a reaction goes to completion
- 4. positive charge
- 5. states mass in an isolated system is neither created, nor destroyed by chemical reactions of physical transformation
- 12. on periodic table
- 14. shiny,hard,malleable and ductile
- 15. composed of two or more separate elements
- 16. number of protons in nucleus of atom
- 18. negative charge
- 20. energy released/hot
- 21. atomic weight I'd another name
- 23. no charge
- 24. known as family
- 25. elements with the same number of electron shells arranged in same row
Down
- 2. created periodic table
- 3. groups of atoms bonded together
- 6. helium,neon,argon,krypton,Xeon,radon are this.
- 7. electrons in outermost orbital
- 8. substance that is not a metal
- 9. element whose properties are intermediate between those of metals and solid non-metals
- 10. element name on periodic table
- 11. basic unit of a chemical element
- 13. energy absorbed/cold
- 17. substance consumed during the reaction to make products
- 19. thin coating of gold, silver, or other metal
- 22. regions of space outside the nucleus of atom
- 23. center of the atom built of protons and neutrons