Download e-book for iPad: Chemistry Science Fair Projects Using French Fries, by Robert Gardner

By Robert Gardner

Booklet through Gardner, Robert, Conklin, Barbara Gardner

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Additional info for Chemistry Science Fair Projects Using French Fries, Gumdrops, Soap, and Other Organic Stuff (Chemistry! Best Science Projects)

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60 Polar and Nonpolar Compounds Table 1: PROPERTIES OF POLAR AND NONPOLAR COMPOUNDS. Type of compound polar General properties Ends of molecules carry a small electric charge opposite in sign. Tend to form ions in water. Chemical bonding may be ionic. Tend to be soluble in other polar compounds. Tend to be insoluble in nonpolar compounds. nonpolar Molecules are uniformly neutral. Do not form ions in water. Chemical bonds are covalent. Tend to be soluble in other nonpolar compounds. Tend to be insoluble in polar compounds.

29 Chemistry Science Fair Projects 1 1 4 2 16 8 2 1 H Ordinary Hydrogen He Ordinary Helium O Ordinary Oxygen 17 8 3 1 H Deuterium 3 2 H Tritium He Helium 3 O Oxygen 17 18 8 O Oxygen 18 Figure 3. These drawings illustrate the isotopes of hydrogen and helium, and one of oxygen’s isotopes. On a separate sheet of paper, see if you can draw the other two isotopes of oxygen. Compounds of Carbon An atom’s electrons are in shells that surround the nucleus. The first shell can hold only two electrons. Since oxygen atoms have eight electrons, there are six electrons in the second shell in addition to the two in the first shell.

Next in the experiment, separate the yolk of an egg from the white. This can be done by first cracking the egg around its center with a table knife. Hold the egg upright over a cereal bowl and remove the upper half of the shell. Some egg white will fall into the bowl when you remove the upper half of the shell. Now carefully pour the yolk, trying not to break it, from one half of the shell to the other several times over the bowl. As you do so, more egg white will fall into the bowl. When most of the egg white has been removed, pour the yolk into the mixture of oil and vinegar, put the cap back on the jar, and shake it again.

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