Part I: Build atoms and ions. https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html Following the above link to get into the site. There are three types of simulations within this virtual lab, Atom, Symbol, Game. You will build atoms and ions with "Symbol" Build an Atom 7 +1 Li He Atom 3 Game Symbol First, click "Symbol". Use the protons, neutrons, and electrons to build a }H atom, a ¿°F atom, a ¿º0²- ion, and a Li* ion. Next, take screen shots of the atoms and ions that you build. Make sure the protons, neutrons, and electrons that you used (upper right of the screen), and the symbol of elements (on the right side of the screen) are included within your pictures. Use the default model "Orbit" (Bohr's model) when you take the screen shot. You can switch the model to "Cloud" (quantum mechanics model) if you wish to see how it looks like. But don't take the screen shots within "Cloud" model. You will learn both Bohr's model and quantum mechanics model of atoms in Chapter 3 of Atom Frist (2nd edition).

Part I: Build atoms and ions. https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html Following the above link to get into the site. There are three types of simulations within this virtual lab, Atom, Symbol, Game. You will build atoms and ions with "Symbol" Build an Atom 7 +1 Li He Atom 3 Game Symbol First, click "Symbol". Use the protons, neutrons, and electrons to build a }H atom, a ¿°F atom, a ¿º0²- ion, and a Li* ion. Next, take screen shots of the atoms and ions that you build. Make sure the protons, neutrons, and electrons that you used (upper right of the screen), and the symbol of elements (on the right side of the screen) are included within your pictures. Use the default model "Orbit" (Bohr's model) when you take the screen shot. You can switch the model to "Cloud" (quantum mechanics model) if you wish to see how it looks like. But don't take the screen shots within "Cloud" model. You will learn both Bohr's model and quantum mechanics model of atoms in Chapter 3 of Atom Frist (2nd edition).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA considers safe for lead air pollution is 1.5 μg/m3. If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.60 L .)
engine.html?ClassID=984223440 How many isotopes are represented for the element in this mass spectrum? Unknown Element Relative Abundance 1001 50 81 83 85 87 89 Mass (M/e) There are [?] stable isotopes. ational Academy of Science. All Rights Reserved. O 9 Enter
Element: Lead Number of Number of Abundar (decima Name of isotope Mass (amu) Abundance Protons Neutrons (%) Lead-204 203.973 Lead-206 205.974 24.10% Lead-207 206.976 22.10% Lead-208 207.977 52.40% Isotope Mass Abundance
On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally occurring tin atoms. a) How many atoms of 124 Sn are present in 42.7 g of a natural sample of tin? 124 Sn: 1.491e24 atoms Scientific Notation: 1.491 x 1024 Helpful tip: To enter a number in scientific notation, enter 0E5 or 1.0e5, for 1.0 x 105 where the E# (or e# ) denotes 10# b) Considering 124 Sn has an isotopic mass of 123.905 amu, calculate the mass of this isotope in the sample. Mass: 8.0 g
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Symbol Abundance in Nature Protons: Periodic Table Neutrons: Electrons: H. Не Li Be C Ne My Isotope Symbol Carbon-13 Abundance in Nature +1 Stable O Mass Number 13 Neutrons Atomic Mass (amu)
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On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally occurring tin atoms. a) How many atoms of 124 Sn are present in 21.9 g of a natural sample of tin? 124 Sn: atoms Helpful tip: To enter a number in scientific notation, enter 1.0E5 or 1.0e5, for 1.0 x 105 where the E# (or e#) denotes 10# b) Considering 124 Sn has an isotopic mass of 123.905 amu, calculate the mass of this isotope in the sample. Mass: 8.0 g
Please try to solve the questions 3 and 4 on the picture
CUmpitte the table UlT LHe Pight. lodine to sho Activity 3 Study an element Look at the symbol on the right and study the Periodic Table at the back of this book 27 (and on the next page). rons in Al 1. Name the element that this symbol represents. 13 2. Give the element's mass number. cleus 3. Give the element's atomic number. Figure 3 Element block from the 4. How many: Periodic Table a) protons are found in this element? b) neutrons are found in this element? c) electrons are found in this element? 5. Give the number of the period that this element is in. 6. Name the other elements that are in the same group as this element. 7. What is this substance commonly used for? 77 Topic 6: Compounds and chemical reactions