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Measurement 100

Measurement 100. Put the following numbers in scientific notation: 40081230 0.00200 240.3. Measurement 200. A 5000. mg block of an unknown material displaces 0.635 cc of water. What is the density of this material (in g/mL)?. Measurement 300.

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Measurement 100

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  1. Measurement 100 Put the following numbers in scientific notation: • 40081230 • 0.00200 • 240.3

  2. Measurement 200 A 5000. mg block of an unknown material displaces 0.635 cc of water. What is the density of this material (in g/mL)?

  3. Measurement 300 A patient’s diet is restricted to 30.0 g of fat per day. If she eats a 0.20 kg burger that is 25% fat by weight, has she exceeded her fat limit for the day?

  4. Bonds & Chemical Structures 100 How many valence electrons are in sulfur tetrafluoride?

  5. Bonds & Chemical Structures 200 Draw the electron dot structure for hydrazine (N2H4)

  6. Bonds & Chemical Structures 300 What is the shape of each of the following molecules? CH4 SiH3Cl PF3 H2S Which of these molecules are polar?

  7. Bonds & Chemical Structures 400 Draw the Lewis dot structure for CH2O. Draw the Lewis dot structure for CH3CO2-. Hint: both oxygen atoms are attached to ONE of the carbon atoms Do either of these exhibit resonance?

  8. Names & Formula 100 Name the following compounds • LiBr • Ca3N2 • Cu2S

  9. Names & Formula 200 Name the following compounds: • PCl3 • N2O5

  10. Names & Formulas 300 Which of the following contains an ion with a 3+ charge? KCl Na2O FeCl3 Mg(NO3)2

  11. Names & Formula 400 Name the following compound: (NH4)2SO4 ...and… Write the formula for magnesium phosphate

  12. Atoms & Elements 100 Describe the structure of an atom and the three types of subatomic particles

  13. Atoms & Elements 200 Write the atomic symbols for the elements described below: • An atom with 15 protons and 16 neutrons • A neutral atom with 17 electrons and 20 neutrons

  14. Atoms & Elements 300 What atoms are described by the following electron configurations? • 1s22s22p63s23p64s23d104p6 • [Ar] 4s23d104p3 • 1s22s22p63s23p64s23d5

  15. Atoms & Elements 400 Consider F and Na. Which is more metallic? Which has a larger atomic radius? Which has a higher ionization energy? Which is more electronegative?

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