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8/17/09 1. Which of the following is most like the currently accepted model of an atom?

8/17/09 1. Which of the following is most like the currently accepted model of an atom? A solid ball An onion A peach A cloud 2. Dalton thought that atoms are most like Smooth hard balls Chocolate chip cookies Onions with many layers Peaches with a solid pit. 8/18/09

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8/17/09 1. Which of the following is most like the currently accepted model of an atom?

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  1. 8/17/09 1. Which of the following is most like the currently accepted model of an atom? A solid ball An onion A peach A cloud 2. Dalton thought that atoms are most like Smooth hard balls Chocolate chip cookies Onions with many layers Peaches with a solid pit

  2. 8/18/09 1. What particles of the atom are found in the nucleus? Protons and neutrons The middle Electrons and protons Electron cloud 2. How many protons does a Krypton atom have? (You may use your agenda) 18 36 72 83.8

  3. 8/19/09 1. Atoms are electrically neutral because they have • Equal numbers of protons and neutrons • Equal numbers of electrons and neutrons • Equal numbers of protons and electrons • No charged particles 2. What is the atomic mass of Krypton? • 18 • 36 • 119.8 • 83.8

  4. 8/20/09 1. What is the fewest number of atoms that can form a compound? • 1 • 2 • 3 • 4 2. As you move from Group 1 to Group 18 on the periodic table • The elements go from highly reactive to non-reactive • The elements are mixed up • The elements go from non-reactive to highly reactive • The elements are in alphabetical order

  5. 8/21/09 1. A combination of two or more atoms that act as a single unit is called • An element • A compound • A molecule • A solution 2. The chemical formula for sulfuric acid is H2SO4. Which of the following best describes sulfuric acid? • An element made up of atoms • A compound made of elements • A mixture made up of elements • A mixture made up of compounds

  6. Answer Key 1. D/A 2. A/B 3. C/D 4. B/A 5. C/B

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