Chapter 4 review

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Chapter 4 review

  1. 1. Chapter 4 Review “Atomic Structure” Pre-AP Chemistry Charles Page High School Stephen L. Cotton
  2. 2. Chapter 4 Review <ul><li>All atoms of the same element have the same _____. </li></ul><ul><li>Know Dalton’s Atomic Theory. </li></ul><ul><li>An element has an atomic number of 76. What is the number of protons and electrons in a neutral atom of this element? </li></ul><ul><li>How is the number of neutrons in the nucleus of an atom calculated? </li></ul>
  3. 3. Chapter 4 Review <ul><li>All atoms are neutral, with the number of protons equaling the ___. </li></ul><ul><li>Isotopes of the same element have different _____. </li></ul><ul><li>Using the periodic table, determine the number of neutrons in 16 O. </li></ul><ul><li>What does the number 84 represent in the name krypton-84? </li></ul>
  4. 4. Chapter 4 Review <ul><li>What is the correct complete symbol for an atom of tritium? </li></ul><ul><li>Know who discovered the neutron, and in what year. </li></ul><ul><li>Dalton said that atoms were indivisible and atoms of the same element were identical. Have any changes been made to this? </li></ul>
  5. 5. Chapter 4 Review <ul><li>The mass number of an element is equal to _____. </li></ul><ul><li>The sum of the protons and neutrons in an atom equals the __. </li></ul><ul><li>What is the purpose of comparing the number of atoms of copper in a coin the size of a penny with the number of people on the earth? </li></ul>
  6. 6. Chapter 4 Review <ul><li>The atomic number of an element is the total number of ____. </li></ul><ul><li>How do the isotopes of hydrogen-1 and hydrogen-2 differ? </li></ul><ul><li>What hypothesis led to the discovery of the proton? </li></ul><ul><li>The element Indium has __ protons and ___ electrons. </li></ul>
  7. 7. Chapter 4 Review <ul><li>Why did J. J. Thomson reason that electrons must be a part of the atoms of all elements? </li></ul><ul><li>Isotopes of the same element have different ____. </li></ul><ul><li>Know characteristics regarding the nucleus of an atom. </li></ul><ul><li>Are these the same element? 38 ? and 39 ? </li></ul>
  8. 8. Chapter 4 Review <ul><li>Describe the model of the atom as a result of Rutherford’s discovery of the nucleus. </li></ul><ul><li>The smallest particle of an element that retains the properties of that element is a(n) ____. </li></ul><ul><li>Know the complete symbol for an element, and what it means: X </li></ul>20 10
  9. 9. Chapter 4 Review <ul><li>What is the relative mass of an electron? </li></ul><ul><li>The particles that are found in the nucleus of an atom are ____. </li></ul><ul><li>Know the ideas from Democritus. </li></ul><ul><li>Who conducted experiments to determine the quantity of charge carried by an electron? </li></ul>
  10. 10. Chapter 4 Review <ul><li>How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? </li></ul><ul><li>Who was the man who lived from 460 B.C. – 370 B.C. , and was among the first to suggest the idea of atoms? </li></ul>
  11. 11. Chapter 4 Review <ul><li>Know the characteristics of subatomic particles. </li></ul><ul><li>A fictitious element “X” has 10.0 % of the isotope with mass 55 amu, 20.0 % of the isotope with mass 56 amu, and 70.0 % of the isotope with mass 57 amu. Estimate the atomic mass of element X. </li></ul>
  12. 12. Chapter 4 Review <ul><li>Element “Z” has two isotopes: one has mass number of 19.0 amu is 55.0 % abundant, and the isotope with mass number 21.0 amu is 45.0 % abundant. What is the average atomic mass for element Z? </li></ul><ul><li>How many protons are present in an atom of Beryllium-9? </li></ul>
  13. 13. Chapter 4 Review <ul><li>Calculate the number of neutrons in Lead-210. </li></ul><ul><li>Determine the number of electrons in an atom of Iridium. </li></ul><ul><li>About how many more times massive is a proton than electron? </li></ul><ul><li>How many neutrons are present in an isotope of uranium-235? </li></ul>
  14. 14. Chapter 4 Review <ul><li>What is the atomic number for an element with 41 neutrons and a mass number of 80? </li></ul><ul><li>Use the periodic table to determine the number of protons in barium. </li></ul><ul><li>How many protons are present in the nuclei of the three known isotopes of hydrogen? </li></ul>
  15. 15. Chapter 4 Review <ul><li>What is the mass number for an oxygen atom that has 10 neutrons in its nucleus? </li></ul><ul><li>How many electrons are in an atom of gold? </li></ul><ul><li>What is the total number of subatomic particles in the nucleus of an atom of bismuth-209? </li></ul>
  16. 16. Chapter 4 Review <ul><li>Use the periodic table to determine the number of electrons in a neutral atom of lithium. </li></ul>End of Chapter 4 Review

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