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What is the short way to write the chemical formulafor water? |
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| What is a molecule that has electrically charged areas? |
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| What is "surface tension"? |
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| The tightness across the surface of water that is caused by polar molecules pulling o n each other. |
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| What is the combined force of attraction among water molecules and with the molecules of surrounding materials? |
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| A mixture that forms when one substance disolves another. Think of Lemonade mix. |
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| What is the substance that does the dissolving? |
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| The process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state. |
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| What is the process by which a gas changes back to a liquid? |
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| The amount of heat needed to increase the temperature of a certain mass of a substance. |
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***BONUS***
About how many types of atoms combine in different ways to form all types of matter? |
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| 2 _______ atoms bonded to an _______ atom to form a water molecule |
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| The _______ hydrogen ends of one water molecule attract the _______ oxygen ends of nearby water molecules. As a result, the water molecules tend to _______ ________. |
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Positive
Negative
Stick Together |
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| _______ ________ also causes raindrops to form round beads when they fall onto a car windshield. |
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| What is one reason water is able to dissolve many substances. |
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It's polar and the charged ends of the water molecule attract the molecules of the other polar substances.
(Think of suger dissolving in hot tea) |
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| Why doesn't water dissolve oil and wax? |
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| Nonpolar molecules do not dissolve well in water. |
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