Across
- 2. the w in whmis
- 7. molecular compounds have a ____ boling point
- 9. physical properties that can be observed but not measured
- 11. negatively charged ionic compound
- 12. sodium chloride
- 13. creator of the planetary model
- 15. a vertical column of elements
- 16. number of protons + number of neutrons
- 17. amount of matter per unit volume
- 19. protons are ________ charged atoms
- 20. an element with a full valence shell is _______
- 21. the measure of attraction between different materials
- 22. Element with the symbol Li
- 24. what happens to the electrons in metal elements
- 25. metals are on this side of the periodic table
- 26. not stable
- 28. type of compound with high melting and boiling point
- 29. mechanical mixture synonym
- 30. attractive forces between particles in this state are very strong
- 31. ability of a substance to react with oxygen
- 32. has properties of both metal and non-metal
Down
- 1. correlation does not equal _________
- 3. the border of the hhps symbol is a triangle meaning the __________ is dangerous
- 4. positively charged ion
- 5. negatively charged particles
- 6. most reactive non-metal
- 8. graduated ___________
- 10. diagram to represent the atomic structure of an element
- 14. an atom of the same element that has a different number of neutrons
- 16. non-metal and non-metal bond together to form
- 18. outermost shell
- 20. the ability of a substance to dissolve in a solvent such as water
- 23. type of statement to use in a hypothesis an educated guess
- 27. atomic radius ________ from right to left
- 30. in a period, all elements have a similar number of _____