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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 11:30
Which of the following is a property of an acid solution? a. slippery to the touch b. ph less than 7 c. turns red litmus paper blue d. bitter taste
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Chemistry, 23.06.2019 15:30
The smallest species of chameleon is found only on an island in madagascar the island has unique geological and climatic conditions that are essential for the chamaeleon to survive the chamaeleon was recently declared an endangered species years from now why won’t this chameleons remains make for a good index fossil
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Calculate the number of iron atoms in 53 g of iron...
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