At the centre of every atom is a nucleus containing protons and neutrons. All atomsof the same element have the same number of protons. This number is used to arrange the elements in the periodic table, beginning with hydrogen, which has just one proton. Electrons are contained in shells around the nucleus.
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the dependant variable is spilled water
the independent is the heat
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The answer is probably c. xylem
Another question on Chemistry
Chemistry, 21.06.2019 22:30
Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.
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