Thursday
April 17, 2014

Homework Help: Chemistry

Posted by mysterychicken on Tuesday, October 19, 2010 at 12:18pm.

I need someone to check these True or False questions for me please:

3. Dissolving salt in water is a physical change- F

14. Burning newspaper is a physical change- F

19. The liter is a measure of volume- T

20. The amount of heat and temperature of a substance are the same- F

21. Zero degrees is the freezing point of water on the Fahrenheit scale- F

23. Scientific laws can change- I was kind of stuck on this one because my text book says that "these laws can be reinterpreted" but the internet says they can't be so...F?

24. Mass is the measure of the earth's gravitational attraction- F

29. Rusting of iron is a chemical property- T

38. Scientists use the SI system of measure.- T

Thanks
-MC

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