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Name: Period: Atoms and the Periodic Table Study Guide **This was made to help you review topics we have discussed in this chapter** Model the parts of the atom. 1) Draw and describe the model of the atom for the following scientists. Scientist Dalton J.J. Thomson Rutherford Bohr Chadwick Drawing of Model Description Explain the differences between protons, electrons, and neutrons. 2) Complete the table below then use the diagram to compare and contrast the subatomic particles. Protons Neutrons Charge Location Relative Mass Electrons 3) What two subatomic particles are responsible for the mass of the atom? Electrons 4) What are isotopes? How do you know if an atom is an isotope of another atom? 5) Use the following diagram of 3 nuclei (of the same element) to fill in the table below: C B A a) What element is this?_____________________________________ Model A Model B Model C Number of Protons Number of Neutrons Number of electrons Mass of each Explain the role of valence electrons and where to find them. 6) What are valence electrons? 7) Why are they significant? Predict the properties of an element based on its location on the periodic table including metals, nonmetals, and metalloids. 8) Name 2 elements in the Nobel Gas Family. What is there reactivity and why? 9) Why are there only 2 elements in the first period on the periodic table? Why are they on opposite ends of the periodic table? 10) Element 3 Li Lithium 6.941 Information Bohr Model **Draw nucleus with protons and neutrons.** Atomic # = Atomic Mass (round) = Protons (+) = Neutrons (0) = Total electrons = Valence electrons = Element 10 Ne Neon 20.179 Information Bohr Model **Draw nucleus with protons and neutrons.** Atomic # = Atomic Mass (round) = Protons (+) = Neutrons (0) = Total electrons = Valence electrons = 11) Which would be better to use for jewelry? Explain your reasoning for each element. Potassium Silicon Gold Bromine 12) Describe the reactivity trend as you move down a group on the periodic table. Represent the atom of an element by drawing a Bohr model and Electron Dot Structure (Lewis Structure) of that atom 14) What information does a Bohr model give you that Lewis Dot does not? 15) Draw a Bohr model and electron dot mode for the following elements using the descriptions provided. Element Description a. Period 5, Group 16 Element: ________________________ b. Period 3, Group 18 Element: ________________________ c. Period 2, Group 2 Element: ________________________ Bohr Model Electron Dot Model