Across
- 2. molecules move freely with no definite shape or volume
- 3. Empirical method of acquiring knowledge that has characterized the development of science. Has 7 steps in this METHOD.
- 5. facts and statistics collected together for reference or analysis
- 8. an element, feature, or factor that is liable to vary or change
- 11. name given to an element
- 12. molecules can flow easily with definite volume, but take shape of the container
- 16. negative charge, found in "electron cloud" outside nucleus
- 17. liquid to solid
- 19. neutral charge, found inside nucleus
Down
- 1. Used to find the pH value in different acids/bases.
- 4. a proposition made as a basis for reasoning, without any assumption of its truth. Also known as a "Prediction"
- 6. Substances which react with acids. pH value 7>
- 7. Something that does not change throughout the experiment.
- 9. Chemical substances that neutralizes alkalis, dissolves some metals. pH value >7
- 10. molecules vibrate but have a fixed position with definite volume and shape
- 11. Equal to the number of protons
- 13. positive charge, found in nucleus
- 14. solid to liquid
- 15. he symbol most often used for this is ρ. Mass/volume
- 18. substances that are made of one kind of matter