TuRn ThE CoMmEnTs In To A PrE ScHoOl FiGhT
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Chemistry, 22.06.2019 12:00
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
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Chemistry, 23.06.2019 01:20
How can parts of a solution be separated by chromatography?
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Chemistry, 23.06.2019 10:00
The image shows the process of which is used in nuclear power plants. photo attached
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