Across
- 4. Where life operates.
- 5. a substance that starts a chemical reaction
- 6. stores energy and forms cell membranes
- 7. Developing new knowledge based upon old knowledge.
- 11. main element in organic compounds
- 13. the protective blanket of gases
- 17. Latin for knowledge
- 18. is a substance that consists of two or more elements
- 20. is the smallest particle of an element
- 21. A test that is used to rule out a hypothesis or validate something already known.
- 24. the outer mantle of the solid earth.
- 25. anything that takes up space and has mass.
- 27. The vast majority of our people directly dependent on the natural resources of their country for their basic needs
- 28. suggested explanation based on evidence that can be tested by observation or experimentation.
- 31. the ability to do work
Down
- 1. concentration of hydronium ions in a solution
- 2. study of energy
- 3. unit of power
- 8. sum of all the biochemical reactions in an organism
- 9. done when force is applied to an object over a distance
- 10. is equal to 746 watts (Another measurement of power)
- 12. 70% of human body is made up of this
- 14. comprises all types of water resources
- 15. named after James Prescott Joule
- 16. rate at which energy is used
- 19. a substance that forms because of a chemical reaction
- 20. A solution with a pH lower than 7
- 22. The study of the interactions between life and its physical environment.
- 23. A solution with a pH higher than 7.
- 26. a pure substance
- 29. A widely accepted hypothesis that stands the test of time.
- 30. small amount of energy