Unformatted text preview: 7. What is unusual about the density of ice compared to the density of water? The solid is less dense than the liquid. 8. Briefly describe the dissolving process. The partially negative pulls out positive ions from the crystal while the partially positive hydrogens pull out the negative ions. 9. What generalization may be made about whether or not one material will dissolve in another? Likes dissolve likes. 10. Why is there controversy about the amount of various chemicals that may be found in a sample of water? Small amounts of these chemicals may be present naturally. We can measure extremely small levels of chemicals. Should these become the permissible levels for the chemicals, i.e. just because we can detect it, is it bad?...
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- Fall '10