C_Unit_5_Subatomic_Particles_WS - _______________________...

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A). B). C). Name : Period : Date: I. Label the parts: II. Fill in the blank with the correct subatomic particle or particles: __________________ 3) Determines the element’s identity __________________ 4) Found by subtracting atomic number from atomic mass __________________ 5) Equals the atomic number __________________ 6) # of protons = # of _________ in a neutral atom III. Fill in the blanks for the elements in this chart. For the purposes of this chart, round all atomic masses to the nearest whole number. Element Element Symbol Number of Protons Number of Neutrons Number of Electrons Atomic Mass Atomic Number lithium carbon chlorine silver lead radium uranium 19 39.0983 1) What element is this? _______________________ 2) How many (A) protons and (B) neutrons does it contain? A) __________ (B) ___________
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IV. Answer the following questions: 1. Choose one or more of the following: E. electron, P. proton, N. neutron _______________________ a) has a negative charge _______________________ b) the number of these changes in isotopes
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Unformatted text preview: _______________________ c) located in the nucleus _______________________ d) has a mass of about 1 amu _______________________ e) has relatively no mass _______________________ f) has no charge _______________________ g) has a positive charge _______________________ h) responsible for the mass of the atom _______________________ i) responsible for the volume of the atom 3. Which element contains the largest number of neutrons per atom? a. Bismuth-210 b. Polonium-210 c. Astatine-210 d. Astatine-211 4. What contribution did these scientists make to atomic models of the atom? a. Democritus: _____________________________________________________________ b. Dalton: ____________________________________________________________ c. Thomson: ____________________________________________________________ d. Rutherford: ______________________________________________________ e. Bohr _____________________________________________________________...
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This note was uploaded on 09/27/2011 for the course CHEM idk taught by Professor All during the Spring '11 term at University of Houston.

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C_Unit_5_Subatomic_Particles_WS - _______________________...

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