Science 9 Crossword
Across
- 2. a substance that burns at room temperature or burns if heated above room temperature
- 3. something that is not being tested, for it's being used in comparison
- 7. a danger or risk
- 9. any infectious materials including blood,urine and saliva
- 10. can burn or explode if heated
- 12. a substance that gives off oxygen to help other substances burn
- 13. put it over someone if a part of their body catches on fire.
- 15. a variable that is manipulated to determine the value of a dependent variable
- 17. always use a _____ to clean up broken glass
- 19. an educated guess
- 20. remember to do this when you have finish your lab
- 21. A circle containing a skull and crossbones is the WHMIS symbol for?
- 22. materials caising toxic effects
- 24. any part of the experiment that is subjet to change
Down
- 1. what you measure in the experiment and what is affected during the experiment
- 4. may cause it's container to explode if heated or dropped
- 5. A circle containing a flaming “O” is the WHMIS symbol for?
- 6. causes burns to skin, eyes, lungs, clothes and metal.
- 8. Workplace hazardous materials information system
- 11. proper face to smell a substance
- 14. this part of your lab requires a god deal of thinking and writing and should be at least half a page
- 16. should always be worn while doing a lab
- 18. where you state the objectives for the lab
- 23. one of the four safety rules