Chemistry > SOLUTIONS MANUAL > Solution Manual For Foundations of College Chemistry, 16th Edition by Morris Hein, Susan Arena, Cary (All)

Solution Manual For Foundations of College Chemistry, 16th Edition by Morris Hein, Susan Arena, Cary Willard

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Solution Manual For Foundations of College Chemistry, 16th Edition by Morris Hein, Susan Arena, Cary Willard-1. (a) A hypothesis is a tentative explanation of certain facts to provide a basis for fur... ther experimentation. A theory is an explanation of the general principles of certain phenomena with considerable evidence to support it. (b) A theory is an explanation of the general principles of certain phenomena with considerable evidence to support it. A scientific law is a simple statement of natural phenomena to which no exceptions are known under the given conditions. 2. (a) hypothesis (b) hypothesis (c) observation (d) theory (e) observation (f) scientific law 3. (a) A liquid has a definite volume but not a definite shape. (b) A gas has an indefinite volume and high compressibility. (c) A solid has a definite shape. (d) A liquid has an indefinite shape and slight compressibility. 4. A crystalline solid has a regular, repeating, three-dimensional, geometric pattern. An amorphous solid does not. (a) A solid that has a regular, repeating pattern is a crystalline solid. (b) A plastic solid is amorphous. (c) A solid that has no regular repeating pattern is amorphous. (d) Glass is an amorphous solid. (e) Gold is a crystalline solid. 5. A phase is a homogeneous part of a system separated from other parts by a physical boundary. 6. There are six phases present. 7. Another name for a homogeneous mixture is solution. 8. Alcohol, mercury, and water are the only liquids in the table which are not mixtures. Mercury is an element; alcohol and water are compounds. – Chapter 1 – 2 9. Air is the only gas mixture found in the table. The other gases are elements or compounds. 10. Three phases are present within the bottle; solid and liquid are observed visually, while gas is detected by the immediate odor. 11. The system is heterogeneous as three phases are present. 12. A system containing only one substance is not necessarily homogeneous. Two phases may be present. Example: ice in water. 13. A system containing two or more substances is not necessarily heterogeneous. In a solution only one phase is present. Examples: sugar dissolved in water, dilute sulfuric acid. 14. Homogeneous mixtures contain only one phase, while heterogeneous mixtures contain two or more phases. 15. (a) sugar, a compound and (c) gold, an element 16. Using the steps of the scientific method to help determine why your cell phone has stopped working. (a) Observation: My cell phone has stopped working. (b) Hypothesis: I think that the battery needs to be recharged. (c) Experiment: Plug in the phone to recharge the battery and allow sufficient time for the battery to fully recharge. Turn the phone back on. The phone now works again. (d) Theory: The battery in the phone has a limited charge time and needs to be recharged on a regular basis in order to keep it in working order. [Show More]

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