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Silicon dioxide, SiO2, is a(n) _____
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Updated 55 days ago|3/4/2017 8:34:55 AM
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Silicon dioxide, SiO2, is most commonly found in nature as quartz and in various living organisms.
Added 55 days ago|3/4/2017 8:34:55 AM
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Confirmed by jeifunk [3/5/2017 8:44:58 AM]
The standard unit for measuring mass is the gram. True False
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Updated 3/17/2016 1:07:47 AM
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The standard unit for measuring mass is the gram. FALSE.
Added 3/17/2016 1:07:47 AM
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Confirmed by selymi [3/17/2016 2:48:28 AM]
Which of the following is a mixture? steel water oxygen gold User: Which of the following is a mixture? steel, water, oxygen, or gold?
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Updated 6/27/2015 6:33:54 PM
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Soil is a mixture.

Added 6/27/2015 6:33:54 PM
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Confirmed by Andrew. [6/27/2015 8:16:43 PM]
Distillation is used to separate _____?
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Updated 6/10/2012 9:25:53 AM
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Distillation is a widely used method for separating mixtures based on differences in the conditions required to change the phase of components of the mixture. To separate a mixture of liquids, the liquid can be heated to force components, which have different boiling points, into the gas phase. The gas is then condensed back into liquid form and collected.
Added 6/10/2012 9:25:55 AM
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Define cohesion
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Updated 1/22/2016 9:58:21 AM
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Cohesion is defined as a condition in which people or things are closely united.

Added 1/22/2016 9:58:20 AM
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