Atomic Structure and the Periodic Table Chapter 4 & 5 Study Guide 1. Describe John Dalton’s atomic theory. 2. In an atomic model that includes a nucleus, where is the positive charge located? 3. Which subatomic particle has a negative charge? 4. What information included on the periodic table is unique for any given element? 5. The number of protons in one atom of an element is that element’s _____. 6. To find the number of neutrons in an atom, you would subtract ______ from the _______. 7. Suppose an atom has a mass number of 23. What can you conclude about that atom? 8. Oxygen-17 and oxygen-18 are examples of ___________. 9. In Niels Bohr’s model of the atom, electrons move like ___________________________ 10. How does Bohr’s atomic model represents the arrangement of electrons? 11. What does the electron cloud model describe? 12. Mendeleev arranged the known chemical elements in a table according to increasing _____ 13. In a periodic table, a set of properties repeats throughout a group which is found in a ____. 14. The usefulness of Mendeleev’s periodic table was confirmed by the discovery of ____. 15. The above picture shows a portion of a blank periodic table. Identify the segments labeled A and B. 16. Moving from left to right across a row of the periodic table, what values increases by exactly one from element to element? 17. The atomic mass of an element is the sum of _____ and ______. 18. The unit for atomic mass is ________. 19. Where are metals found on the periodic table? 20. What qualities are known from the periodic table about the metalloid silicon? 21. List the physical properties of metals at room temperature. 22. As you move from left to right across a period, the number of valence electrons ______ 23. Which element is found in nature only in compounds? 24. Which element is found in most of the compounds in your body except for water? 25. If an atom has 34 protons and 40 neutrons, what is its mass number? 26. Most calcium atoms have an atomic number of 20 and a mass number of 40, but some calcium atoms have a mass number of 48. What word could you use to describe these two kinds of calcium atoms? Figure 4-3 27. What is the charge on the subatomic particles represented in Figure 4-3? Assuming all the particles in the nucleus are visible, what are the atomic and mass numbers of the atom shown? 28. How many electrons would be found in Figure 4-3? 29. How many energy levels would be required to hold the electrons in Figure 4-3? 30. Identify the element in Figure 4-3.