Chem 6A Quiz 1_key_Sect_E09_E04_E05

Chem 6A Quiz 1_key_Sect_E09_E04_E05 -...

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Chem 6A Quiz 1 (10/06/2008) Section E09 1) In the following pairs, which of the two have a longer wavelength? (Circle your choice) a. Radio waves vs. Ultraviolet light (2pts) b. Orange light vs. Blue light (2pts) c. Infrared vs. X‐rays (2pts) 2) Please fill in the following information (you may use the attached periodic table to assist you) a. The atomic number of ___ Mg ______ is 12.(1pt) b. The mass number of elemental phosphorous is ____ 30.97 ___. (1pt) c. The isotope__ 76 Ge _ __ has 44 neutrons, 32 protons, and 32 electrons. 1pt) d. The difference between atomic number and mass number is that atomic number is the number of _ protons _ (1pt) and mass number is the sum of the number of _ protons _ (1pt) and the number of _ neutrons _. (1pt) e. What is an isotope? (2pts) One of two atoms that have the same atomic number but differ in mass number. (Atkins/Jones) 3) T/F _F _ Ernest Rutherford’s cathode rays experiments allowed him to discover the electron. (1pts) _T _ Robert Millikan studied small electrically charged oil droplets to determine the charge and mass of an electron. (1pts) 4) What is the frequency of red light (wavelength of red light is approximately 700nm)?
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Chem 6A Quiz 1_key_Sect_E09_E04_E05 -...

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