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Drill 20 1/14/13

Drill 20 1/14/13. List 3 characteristics of ionic compounds. Answer. High melting point, high solubility, electrolyte. Midterm Review. Scientific Investigation 100. Which of the following is a chemical change? A – melting wax B – boiling water C – painting black D – burning wood.

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Drill 20 1/14/13

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  1. Drill 20 1/14/13 • List 3 characteristics of ionic compounds.

  2. Answer • High melting point, high solubility, electrolyte

  3. Midterm Review

  4. Scientific Investigation 100 Which of the following is a chemical change? A – melting wax B – boiling water C – painting black D – burning wood

  5. Scientific Investigation 200 • Which of these is not an SI base unit? • A - Kg • B - s • C - L • D - K

  6. Scientific Investigation 300 • What is the name of the lab equipment shown? • F - Watch glass • G - Crucible • H - Beaker • J - Evaporating dish

  7. Scientific Investigation 400 Which of the following is a homogenous mixture? A – carbon dioxide B – air C – a block of lead D – ice water

  8. Scientific Investigation 500 • How many liters are equivalent to five milliliters? F - 0.005 L G - 0.05 L H - 500 L J - 5000 L

  9. Trial Measured Volume (L) 1 5.20 2 5.20 3 5.19 4 5.20 5 5.20 The following data was collected. The volume of the gas is known to be 2.20 L. This data reflects — A - low precision and low accuracy B - low precision and high accuracy C - low accuracy and high precision D - high accuracy and high precision Scientific Investigation 600

  10. Scientific Investigation 700 • Which of the following best describes why an experiment should be repeated? A - To organize the data B - To produce a variety of results C - To include another variable D - To verify the observed results

  11. Chemical Formulas - 100 • The correct name for P2O5 is — F - phosphorus (V) pentoxide G - phosphorus oxide H - phosphorus (II) oxide J - diphosphorus pentoxide

  12. Chemical Formulas - 200 • The correct formula for copper (I) bromide is — A - CuBr B - CuBr2 C - Cu2Br D - Cu2Br3

  13. Chemical Formulas - 300 • What type of bonds are present in (NH4)2S? A – Ionic B – Covalent C – Ionic & Covalent D – There are no bonds

  14. Chemical Formulas - 400 • What property does CF4 most likely not have? A – High boiling point B – Soft and brittle C – Low conductivity D – Sharing of electrons

  15. Chemical Formulas - 500 • How many atoms does (NH4)2SO4 have? A - 12 B - 18 C - 15 D - 10

  16. Chemical Formulas 600 • What is the shape of CH4? A – linear B – trigonal planar C – tetrahedral D – pyramidal

  17. Chemical Formulas - 700 • The correct name for PbSO3 is — A – Lead Sulfite B – Lead (II) Sulfite C – Lead (IV) Sulfate D – Lead Sulfur Trioxide

  18. Atomic Structure and Periodicity - 100 • How many valence electrons does a neutral atom of silicon have? A - 3 B - 4 C - 5 D - 6

  19. Atomic Structure and Periodicity - 200 • A scientist has found the following isotope of oxygen: 19 8 How many neutrons are present in this isotope? A - 8 B - 11 C - 19 D - 27 O

  20. Atomic Structure and Periodicity - 300 • An atomic spectra can be used to determine the — F - composition of stars G - depth of the ocean H - distance between two mountains J - malignancy of a tumor

  21. Atomic Structure and Periodicity - 400 • The net charge on an aluminum ion is 3+ because there are — F - 10 protons and 13 electrons in the atom G - 13 protons and 10 neutrons in the nucleus H - 10 neutrons and 13 electrons in the atom J - 13 protons and 10 electrons in the atom

  22. Atomic Structure and Periodicity - 500 Two atoms have the same electonegativity. This means when the two atoms bond, the resulting bond is — A - ionic B – metallic C - nonpolar covalent D – polar covalent

  23. Atomic Structure and Periodicity - 600 • What is the main similarity among elements in group 2? F - Atomic radius G - Chemical properties H - Mass number J - Boiling point

  24. Atomic Structure and Periodicity - 700 • Which of the following requires the least energy to remove an electron? A - Br B - K C - Al D - Na

  25. Misc. - 100 • Compared to chemical reactions, nuclear reaction produce changes in the - A – electron structure and far more en. B – electron structure and less energy C – nucleus and far more energy D – nucleus and less energy

  26. Misc. - 200 Convert Convert 2.8 x 105 centimeters (cm) to kilometers (km). A – 20.8 km B – 2.8 km C – 0.28 km D – 0.028 km

  27. Misc - 300 • The elements that are characterized as being highly reactive — A - alkali metals B - alkaline earth metals C - halogens D - lanthanoids

  28. Misc. - 400 • Which of the following best describes sublimation? F - A solid melting to a liquid G - A solid melting to a liquid, which then evaporates H - The movement of gaseous particles so that they fill the space they occupy J - A solid forming a gas

  29. Misc - 500 Who determined that an atom is made up of mostly empty space using gold foil? A - Bohr B - Millikan C - Moseley D - Rutherford

  30. Misc. - 600 Dumbbell shaped orbital are called: A – s-orbitals B – p-orbitals C – d-orbitals D – f-orbitals

  31. Misc. - 700 What element is represented by [He]2s22p6 ? A – Ne B – Ca C – Ar D – Li

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