14.2 Stanford Notes Atom Structure Name
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1 14.2 Stanford Notes Atom Structure Name MAIN POINTS: Write a summary of the main point of each paragraph. Page 322 Questions: Questions you should be able to answer after reading. The pattern of colors given off by a particular atom is called: a) An orbital. b) An energy level. c) A spectrum. Which of the diagrams corresponds to Lithium (you must look at the pictures on page 322 to answer this question) Vocab: Spectrum: Spectral Line: Spectroscope: Page 323 Which of the above particle pairs attract each other and which repel each other? When an electron moves from a lower energy level to a higher energy level, the atom: a. Abosorbs light. b. Gives off light. c. Becomes a new isotope. An analogy for energy levels in an atom is what: How do the electrons climb the stairs (energy levels) in an atom? Vocab: Energy Level:
2 p. 325 (NOT 324) What are the rules for electron filling of energy levels? 4) Electrons that are located further from the nucleus (in a higher energy level) have more or less energy than electrons that are closer to the nucleus (lower energy level)? p. 326 (VERY IMPORTANT) Two of the electron energy levels can hold 8 electrons. Which energy levels are they? How many electrons can fit into the 4 th energy level? The element beryllium has an atomic number of 4. Which diagram shows beryllium s electron arrangement: Draw Picture 14.14: 4) Which two elements have electrons only in the first energy level? 5) On average, electrons in the 4 th energy level are: a. Farther away from the nucleus then electrons in the 2 nd energy level. b. Closer to the nucleus than electrons in the 2 nd energy level. c. About the same distance from the nucleus as electrons in the 2 nd energy level.
3 Additional Questions atomic number energy level neutron quantum theory electron isotopes nucleus radioactive elementary charge mass number spectral line spectroscope 1. The sum of protons plus neutrons in the nucleus of an atom is known as the. 2. The smallest unit of electric charge in matter is called. 3. The core of the atom containing most of the atom s mass and all of its positive charge is called the. 4. A light particle with a negative charge, found in atoms, is called a(n). 5. A neutral particle with nearly the same mass as the proton is the. 6. The number of protons in an atom, unique to each element, is known as the. 7. Atoms of the same element containing different numbers of neutrons are called. 8. One of the allowed energies for electrons in an atom is known as a(n). 9. The theory that describes matter and energy at atomic sizes is the. 10. A bright colored line produced by a spectroscope is a(n). 11. An instrument that is used to separate light into spectral lines is a(n). 12. Which particle in an atom is most responsible for its chemical properties? 13. What is the source of the light you see? 14. How can a spectroscope be used to identify an element heated to incandescence? 15. How did Neils Bohr explain spectral lines? 16. What is the difference between an electron in ground state and one in an excited state? 17. What would occur if an electron were to move from a certain energy level to a lower energy level? 18. How would an atom move from a lower energy level to a higher energy level? 19. The location of an electron can be described by its.
4 Draw an atomic model of 16 8 O. Make sure to: Draw an atomic model of S. Make sure to: Draw an atomic model of Na-23. Make sure to: Draw an atomic model of Be-9. Make sure to:
5
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