Across
- 6. freezing happens when particles
- 7. subatomic particle in the outermost shell of an atom
- 8. bond between two nonmetals
- 10. all covalent bonds _______ valence electrons
- 11. change of a stable atom
- 12. state of matter with a fixed shape
- 18. ancient Greeks thought that all matter was made of only ___ elemtns
- 19. freezing point of water in SI units
- 20. row on the periodic table of elements
- 22. sublimate happens when solid particles ______ energy
- 24. combine in variable proportions
- 25. mixture that has a uniform appearance
- 26. name of JJ Thomson's Atomic Model
Down
- 1. 80% of elements are
- 2. science you will take next year
- 3. family of elements in group 1
- 4. mixture that does not have a uniform appearance
- 5. demonstrated that fire was not an element
- 8. substance made of up or more elements that have been chemically combined
- 9. electron dot notation used to represent
- 13. what does the period number tell you about an element
- 14. metals found on the periodic table
- 15. first called particle atomos
- 16. all ionic bonds _____ electrons
- 17. atomic model used in physical science because it is workable and easy to understant
- 20. positively charged particle in nucleus
- 21. not a state of matter
- 23. elements contains only one kind of
- 24. highly conductive malleable and lustrous solid