Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 2, Problem 14E
Open the Build an Atom simulation (http://openstax.org/l/16PhetAtomBld)
(a) Drag protons, neutrons, and electrons onto the atom template to make a neutral atom of Oxygen-16 and give the isotope symbol for this atom.
(b) Now add two more electrons to make an ion and give the symbol for the ion you have created.
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Solve the given problem using an element that has three naturally occurring isotopes.
Click on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the “Mix Isotopes” tab, hide the “Percent Composition” and “Average Atomic Mass” boxes, and then select the element boron.(a) Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts.(b) Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice.(c) Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on “More” and then move the sliders to the appropriate amounts.(d) Reveal the “Percent Composition” and “Average Atomic Mass” boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction.(e) Select “Nature’s” mix of isotopes and compare it to your prediction. How well does…
Open the Build an Atom simulation (http://openstaxcollege.org/l/16PhetAtomBld)(a) Drag protons, neutrons, and electrons onto the atom template to make a neutral atom of Lithium-6 and give the isotope symbol for this atom.(b) Now remove one electron to make an ion and give the symbol for the ion you have created.
Open the Build an Atom simulation (http://openstaxcollege.org/l/16PhetAtomBld) and click on theAtom icon.(a) Pick any one of the first 10 elements that you would like to build and state its symbol.(b) Drag protons, neutrons, and electrons onto the atom template to make an atom of your element. State the numbers of protons, neutrons, and electrons in your atom, as well as the net charge and mass number.(c) Click on “Net Charge” and “Mass Number,” check your answers to (b), and correct, if needed.(d) Predict whether your atom will be stable or unstable. State your reasoning.(e) Check the “Stable/Unstable” box. Was your answer to (d) correct? If not, first predict what you can do to make a stable atom of your element, and then do it and see if it works. Explain your reasoning.
Chapter 2 Solutions
Chemistry Atoms First2e
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- Click on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible.arrow_forwardOpen the Build an Atom simulation (http://openstaxcollege.org/l/16PhetAtomBld) Drag protons, neutrons, and electrons onto the atom template to make a neutral atom of Oxygen-16 and give the isotope symbol for this atom. Now add two more electrons to make an ion and give the symbol for the ion you have created.arrow_forward3) Calculate the atomic mass of the following element with three isotopes (masses and relative abundances given below). Referring to the periodic table, identify the element. 27.9769 u, 92.2232% 28.9765 u, 4.6858% 29.9738 u, 3.0921%arrow_forward
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