Across
- 3. this type of particle can best be described as an electron
- 4. positively charged subatomic particles
- 7. chemical reaction that results in a product with lower mass than the reactants
- 9. describes the electrons on the outermost shell
- 11. type of bond that results from transferring valence electrons
- 12. the type of bond that represents 6 valence electrons
- 13. composed of tightly packed protons and neutrons
- 15. type of bond that results from sharing valence electrons
- 16. elements that are malleable and high in conductivity
- 19. elements found along the staircase of the periodic table
- 22. who should you tell first if you have a problem with a lab?
- 23. non-numerical observations
- 26. oxidation number of iron (IV)
- 27. an _____ is mostly composed of empty space
Down
- 1. grams (g) are the base unit for ____
- 2. type of matter with the most compact molecules
- 3. lab equipment used to measure mass
- 4. dissolving is an example of this type of change
- 5. mass per volume
- 6. subatomic particles with a zero charge
- 8. elements that are dull and brittle
- 10. observations that include numerical information
- 14. the study of matter and changes in matter
- 17. the periodic table provides information about _____
- 18. a particle with zero mass and a charge of +1
- 20. used to store or transfer approximate (not exact) volumes of liquids
- 21. elements within ____ have similar chemical properties
- 24. this type of particle can best be described as a helium nucleus
- 25. a charged atom
- 28. the number of valence electrons an atom of calcium contains