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Chemistry, 21.06.2019 16:40
Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.
Answers: 1
Chemistry, 22.06.2019 03:00
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
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Chemistry, 22.06.2019 04:00
How do scientists think that gravity affected the formation of our solar system?
Answers: 1
Chemistry, 22.06.2019 05:30
What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?
Answers: 1
Where do you find a valence electron?...
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