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Chapter 4 Review “Atomic Structure”. Chapter 4 Review. All atoms of the same element have the same _____. Know Dalton’s Atomic Theory. An element has an atomic number of 76. What is the number of protons and electrons in a neutral atom of this element?

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chapter 4 review
Chapter 4 Review
  • All atoms of the same element have the same _____.
  • Know Dalton’s Atomic Theory.
  • An element has an atomic number of 76. What is the number of protons and electrons in a neutral atom of this element?
  • How is the number of neutrons in the nucleus of an atom calculated?
chapter 4 review1
Chapter 4 Review
  • All atoms are neutral, with the number of protons equaling the ___.
  • Isotopes of the same element have different _____.
  • Using the periodic table, determine the number of neutrons in 16O.
  • What does the number 84 represent in the name krypton-84?
chapter 4 review2
Chapter 4 Review
  • What is the correct complete symbol for an atom of tritium?
  • Know who discovered the neutron, and in what year.
  • Dalton said that atoms were indivisible and atoms of the same element were identical. Have any changes been made to this?
chapter 4 review3
Chapter 4 Review
  • The mass number of an element is equal to _____.
  • The sum of the protons and neutrons in an atom equals the __.
  • 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?
chapter 4 review4
Chapter 4 Review
  • The atomic number of an element is the total number of ____.
  • How do the isotopes of hydrogen-1 and hydrogen-2 differ?
  • What hypothesis led to the discovery of the proton?
  • The element Indium has __ protons and ___ electrons.
chapter 4 review5
Chapter 4 Review
  • Why did J. J. Thomson reason that electrons must be a part of the atoms of all elements?
  • Isotopes of the same element have different ____.
  • Know characteristics regarding the nucleus of an atom.
  • Are these the same element? 38? and 39?
chapter 4 review6
Chapter 4 Review
  • Describe the model of the atom as a result of Rutherford’s discovery of the nucleus.
  • The smallest particle of an element that retains the properties of that element is a(n) ____.
  • Know the complete symbol for an element, and what it means: X

20

10

chapter 4 review7
Chapter 4 Review
  • What is the relative mass of an electron?
  • The particles that are found in the nucleus of an atom are ____.
  • Know the ideas from Democritus.
  • Who conducted experiments to determine the quantity of charge carried by an electron?
chapter 4 review8
Chapter 4 Review
  • How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?
  • Who was the man who lived from 460 B.C. – 370 B.C., and was among the first to suggest the idea of atoms?
chapter 4 review9
Chapter 4 Review
  • Know the characteristics of subatomic particles.
  • 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.
chapter 4 review10
Chapter 4 Review
  • 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?
  • How many protons are present in an atom of Beryllium-9?
chapter 4 review11
Chapter 4 Review
  • Calculate the number of neutrons in Lead-210.
  • Determine the number of electrons in an atom of Iridium.
  • About how many more times massive is a proton than electron?
  • How many neutrons are present in an isotope of uranium-235?
chapter 4 review12
Chapter 4 Review
  • What is the atomic number for an element with 41 neutrons and a mass number of 80?
  • Use the periodic table to determine the number of protons in barium.
  • How many protons are present in the nuclei of the three known isotopes of hydrogen?
chapter 4 review13
Chapter 4 Review
  • What is the mass number for an oxygen atom that has 10 neutrons in its nucleus?
  • How many electrons are in an atom of gold?
  • What is the total number of subatomic particles in the nucleus of an atom of bismuth-209?
chapter 4 review14
Chapter 4 Review
  • Use the periodic table to determine the number of electrons in a neutral atom of lithium.

End of Chapter 4 Review

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