Wednesday---Lab Analysis Questions
1. Which mineral or minerals were found in all of the toothpastes tested? Did any toothpaste contain minerals not found in the other toothpastes?
2. Which toothpaste was most effective in removing stains from the tile?
3. Were your predictions about which toothpaste would be most effective correct?
4. Does the toothpaste that was most effective in cleaning the tile differ in mineral content from the other toothpastes that were tested?
6. How do the minerals in toothpaste affect the toothpaste's cleaning ability? Explain.
7. Your teeth have the same composition as apatite, which has a hardness of 5 on the Mohs scale. What would be the advantages and disadvantages of using a toothpaste containing a mineral that is harder than apatite? Softer than apatite? Explain.
Thursday--None
Friday--Handout pg. 28
Study Guide for Next Week's Test
*Rock Cycle in detail
* Each type of rock, how it is made, how it changes, and examples of each.
* Minerals--what are they, how do they form, what are their properties
* Crystals--examples, how they form
* Ores--what are their uses, examples given in class
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