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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, 22.06.2019 21:30
What is happening when the water inside a kettle heats up and begins to boil
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Making sure. is it d? the products of the neutralization reaction between hno2(aq) and ca(oh)2(aq)...
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