Across
- 3. columns on the periodic table
- 7. the total area of the exterior of an object
- 8. hydrogen carbon and oxygen combine to make heat and light water and carbon dioxide
- 10. reaction where a compound replaces a part of itself with another element
- 15. something known because of your senses (sight sound smell etc)
- 16. a number placed in front of a chemical symbol
- 17. a atom that gained or lost a charge
- 18. scaled from 0 to 7
- 19. can be measured with a thermometer
- 20. a reaction where a single compound splits or breaks down into smaller bits
- 23. a reaction where two compound swap one of there parts with the other
- 24. positive charge
- 25. scaled from 7 to 14
- 27. a atom that gained a positive charge
Down
- 1. electrons on the outer most shell
- 2. scaled at 7
- 4. a atom that gained a negative charge
- 5. range of numbers from 0 to 14
- 6. a reaction where two or more elements or compounds combine
- 9. a educated guess based on what you know
- 11. the amount of a substance given
- 12. the rows on the periodic table
- 13. neutral charge
- 14. number of protons
- 21. how much matter contained in atom
- 22. small number written below the chemical symbol and right a bit
- 26. negative charge