Across
- 5. a substance that starts a chemical reaction
- 7. rate at which energy is used
- 9. small amount of energy
- 10. study of energy
- 13. unit of power
- 15. A test that is used to rule out a hypothesis or validate something already known.
- 17. the ability to do work
- 18. is the smallest particle of an element
- 20. A widely accepted hypothesis that stands the test of time.
- 22. Where life operates.
- 23. The study of the interactions between life and its physical environment.
- 24. suggested explanation based on evidence that can be tested by observation or experimentation.
- 26. A solution with a pH lower than 7
- 28. the outer mantle of the solid earth.
- 29. the protective blanket of gases
Down
- 1. main element in organic compounds
- 2. Latin for knowledge
- 3. Developing new knowledge based upon old knowledge.
- 4. concentration of hydronium ions in a solution
- 6. a pure substance
- 8. a substance that forms because of a chemical reaction
- 11. is equal to 746 watts (Another measurement of power)
- 12. The vast majority of our people directly dependent on the natural resources of their country for their basic needs
- 13. done when force is applied to an object over a distance
- 14. sum of all the biochemical reactions in an organism
- 16. anything that takes up space and has mass.
- 19. named after James Prescott Joule
- 21. is a substance that consists of two or more elements
- 24. comprises all types of water resources
- 25. A solution with a pH higher than 7.
- 27. stores energy and forms cell membranes