AP Semester I Review: Free Response Questions
... 9. Naturally occurring chlorine molecules, Cl2, have masses of 70, 72 and 74 amu as seen in the mass spectrum above. They occur in the percentages 56.25%, 37.50% and6.250% respectively. Use this data to calculate the average atomic mass of chlorine atoms and to find the relative abundance of 35Cl an ...
... 9. Naturally occurring chlorine molecules, Cl2, have masses of 70, 72 and 74 amu as seen in the mass spectrum above. They occur in the percentages 56.25%, 37.50% and6.250% respectively. Use this data to calculate the average atomic mass of chlorine atoms and to find the relative abundance of 35Cl an ...
Chemistry I Honors
... b.On the basis of the Lewis structures drawn in part (a), answer the following questions about the particular species indicated. i. What is the Cl-Ge-Cl bond angle in GeCl4? ii.Is SeCl4 polar? Explain. iii.What is the hybridization of the I atom in ICl4 ? ...
... b.On the basis of the Lewis structures drawn in part (a), answer the following questions about the particular species indicated. i. What is the Cl-Ge-Cl bond angle in GeCl4? ii.Is SeCl4 polar? Explain. iii.What is the hybridization of the I atom in ICl4 ? ...
Midterm Review Answers
... 30. Explains the experimental phenomenon of electron diffraction E 31. Indicates that an atomic orbital can hold no more than two electrons B 32. Predicts that it is impossible to determine simultaneously the exact position and the exact velocity of an electron A Questions 33-35 refer to the phase d ...
... 30. Explains the experimental phenomenon of electron diffraction E 31. Indicates that an atomic orbital can hold no more than two electrons B 32. Predicts that it is impossible to determine simultaneously the exact position and the exact velocity of an electron A Questions 33-35 refer to the phase d ...
Introduction to Nanoscience Study Guide
... to be + = 2. The basic premise is just that simple. In this example, we do not consider structure, chemistry or forces– just simple geometry. Wettability is the ability of a solid surface to break up the surface tension of water. Obviously that requires energy and that energy arises from the s ...
... to be + = 2. The basic premise is just that simple. In this example, we do not consider structure, chemistry or forces– just simple geometry. Wettability is the ability of a solid surface to break up the surface tension of water. Obviously that requires energy and that energy arises from the s ...
03-02BohrAtom
... E = hc/λ, λ = hc/E = (6.626E-34)(3.00E8)/(1.63404E-18) = 1.21649E-07 m = 122 nm ...
... E = hc/λ, λ = hc/E = (6.626E-34)(3.00E8)/(1.63404E-18) = 1.21649E-07 m = 122 nm ...
Chemistry Final Exam Review 2013
... 1. Which idea of John Dalton is no longer considered part of the modern view of atoms? a. Atoms are extremely small. b. Atoms of the same element have identical masses. c. Atoms combine in simple whole number ratios to form compounds. d. Atoms of different elements can combine in different ratios to ...
... 1. Which idea of John Dalton is no longer considered part of the modern view of atoms? a. Atoms are extremely small. b. Atoms of the same element have identical masses. c. Atoms combine in simple whole number ratios to form compounds. d. Atoms of different elements can combine in different ratios to ...
Unit 2: Biochem Notes
... Na+Cl3. H2O has the ability to travel through small pores or to move upward through narrow vessels against the force of gravity. ________________________ - Water molecules and the molecules of solid surfaces are attracted to each other. 4. Water heats up and cools down at a slow rate (resists change ...
... Na+Cl3. H2O has the ability to travel through small pores or to move upward through narrow vessels against the force of gravity. ________________________ - Water molecules and the molecules of solid surfaces are attracted to each other. 4. Water heats up and cools down at a slow rate (resists change ...
E - Purdue Physics
... quantized energy levels (K+U) for an atom. Initially the atom is in its ground state (symbolized by a dot). An electron with kinetic energy 6 eV collides with the atom and excites it. What is the remaining kinetic energy of the electron? ...
... quantized energy levels (K+U) for an atom. Initially the atom is in its ground state (symbolized by a dot). An electron with kinetic energy 6 eV collides with the atom and excites it. What is the remaining kinetic energy of the electron? ...
Atoms Matter Energy Notes
... o Ex: Chemical Change: a change in the composition of materials creating a _________________________________ with totally new properties. (you can NOT get the old substance back) o Ex: Indicators of a Chemical Change: Gas Liberations: _________________ is formed and you observe bubbles Heat an ...
... o Ex: Chemical Change: a change in the composition of materials creating a _________________________________ with totally new properties. (you can NOT get the old substance back) o Ex: Indicators of a Chemical Change: Gas Liberations: _________________ is formed and you observe bubbles Heat an ...
Problem Set 9 - MIT OpenCourseWare
... 5. (40 points) Lab Exercise II: Multiple Wells Run the PhET simulation called “Band Structure” and use it to answer the following questions. Note that the numbers produced by this simulation are correct for a particle of mass me = .511M eV , the electron mass. You are strongly encouraged to work in ...
... 5. (40 points) Lab Exercise II: Multiple Wells Run the PhET simulation called “Band Structure” and use it to answer the following questions. Note that the numbers produced by this simulation are correct for a particle of mass me = .511M eV , the electron mass. You are strongly encouraged to work in ...
Atomic Structure - s3.amazonaws.com
... Early Models of the Atom Dalton’s Atomic Theory (Between 1766-1844) Atoms of different elements can physically mix together or can chemically combine in simple whole-number ratios to form compounds. Chemical reactions when atoms are separated, joined, or rearranged. Atoms of one element are neve ...
... Early Models of the Atom Dalton’s Atomic Theory (Between 1766-1844) Atoms of different elements can physically mix together or can chemically combine in simple whole-number ratios to form compounds. Chemical reactions when atoms are separated, joined, or rearranged. Atoms of one element are neve ...
The Exam 2 Solutions are also available now.
... The lone pairs are shown along with the non-zero formal charges. The circled structure with no formal charges on any atom is the best, and it is in fact the correct, observed structure. Note that this molecule is a simple coupling between NO, with an unpaired electron on the N, and CN (which is in p ...
... The lone pairs are shown along with the non-zero formal charges. The circled structure with no formal charges on any atom is the best, and it is in fact the correct, observed structure. Note that this molecule is a simple coupling between NO, with an unpaired electron on the N, and CN (which is in p ...
chem 1411- chapter 7
... get excited to higher energy levels by absorbing energy. This is the excited state of an atom, which is unstable. The electrons then start falling from higher levels to lower levels, releasing energy. This energy when resolved through a spectroscope, we get different lines of specific wavelengths. T ...
... get excited to higher energy levels by absorbing energy. This is the excited state of an atom, which is unstable. The electrons then start falling from higher levels to lower levels, releasing energy. This energy when resolved through a spectroscope, we get different lines of specific wavelengths. T ...
Ch. 2: The Chemical Context of Life AP Reading Guide
... 1. Define and give an example of the following terms: matter, element, compound. 2. What four elements make up 96% of all living matter? 3. What is the difference between an essential element and a trace element? Concept 2.2 An element’s properties depend on the structure of its atoms 4. Sketch a mo ...
... 1. Define and give an example of the following terms: matter, element, compound. 2. What four elements make up 96% of all living matter? 3. What is the difference between an essential element and a trace element? Concept 2.2 An element’s properties depend on the structure of its atoms 4. Sketch a mo ...
Forces between atoms and molecules
... Most of the interactions between atoms can be expressed in terms of inverse power laws of the distance, r. In most cases these analytical expressions are given in terms of potential energy of the interaction, U(r). Note that force is the negative gradient of the potential energy: F(r) = -dU(r)/dr. ...
... Most of the interactions between atoms can be expressed in terms of inverse power laws of the distance, r. In most cases these analytical expressions are given in terms of potential energy of the interaction, U(r). Note that force is the negative gradient of the potential energy: F(r) = -dU(r)/dr. ...
chapter 1 - Revsworld
... The combustion of 3.42 g of a compound known to contain only nitrogen and hydrogen was burned in oxygen. The result was the formation of 9.82 g of NO2 and 3.85 g of water. Determine the empirical formula of this compound. SHOW ALL WORK (a) (b) (c) (d) (e) ...
... The combustion of 3.42 g of a compound known to contain only nitrogen and hydrogen was burned in oxygen. The result was the formation of 9.82 g of NO2 and 3.85 g of water. Determine the empirical formula of this compound. SHOW ALL WORK (a) (b) (c) (d) (e) ...
CHEMISTRY CHAPTER 5 OUTLINE NOTES 5.1 – Light and
... • Why aren’t negatively charged electrons pulled in towards the nucleus? • Why are there differences in chemical behavior among the various elements? o One scientist named Neils Bohr thought of electrons being in “orbit” around the nucleus in much the same manner as Earth is in orbit around the sun. ...
... • Why aren’t negatively charged electrons pulled in towards the nucleus? • Why are there differences in chemical behavior among the various elements? o One scientist named Neils Bohr thought of electrons being in “orbit” around the nucleus in much the same manner as Earth is in orbit around the sun. ...
Quantum physics
... • Not every photon would collide with an electron; most are reflected by the metal or miss hitting any electron. • On the way out to the metal surface, an electron may lose its kinetic energy to ions and other electrons it encounters along the way. This energy loss prevents it from overcoming the wo ...
... • Not every photon would collide with an electron; most are reflected by the metal or miss hitting any electron. • On the way out to the metal surface, an electron may lose its kinetic energy to ions and other electrons it encounters along the way. This energy loss prevents it from overcoming the wo ...
Rutherford backscattering spectrometry
Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science. Sometimes referred to as high-energy ion scattering (HEIS) spectrometry, RBS is used to determine the structure and composition of materials by measuring the backscattering of a beam of high energy ions (typically protons or alpha particles) impinging on a sample.