1. Chemistry -

2. ______ is anything that has mass and occupies space.

3. Element -

4. ______ is the smallest particle of matter, composed of protons, neutrons, and electrons.

5 Atomic number -

6. ______ is matter which has the same properties throughout.

7. Density -

8. ______ is energy that results from a molecule being in motion.

9. Compound -

10. ______ is 1/12 the mass of a carbon-12 atom.

B. Concepts and Applications of Concepts

1. What is the electron configuration of the following atoms? (5 points)

          Ca

          S

2. Diagram the apparatus used by Rutherford, the results he obtained, and his interpretation of the results (10 points)

3. Balance the following chemical reactions or, if they are correct as written, indicate that they are balanced. (10 points)

          N₂ + C1₂ ----> NC1₃

          AgNO₃ + HCl ----> AgCl + HNO₃

          Na₂SO₄ + C ----> Na₂S + CO₂

4. Convert the following English measurements to their metric equivalents. (8 points)

          1.12 inches (2.54 cm = 1 inch)

          1.6 gallons (1L=1.06 quart)

5. Complete the following table of prefixes and their numerical equivalents. (5 points)

          Prefix           Abbreviation           Numerical Equivalent

          Mega           M                               10⁶

          ______          µ                               10^-6

         ______           k                              _____

          centi                   ______           ______

6. Consider the following balanced chemical equation:

          C₃H₈ + 5 O₂ ----> 3 CO₂ + 4 H₂O

List: (a) how many molecules of oxygen are there and (b) how many atoms of hydrogen are involved in the reaction. (2 points)

7. Suppose you have a mixture of salt (NaCl) and sand (SiO₂) How could you go about separating the two chemicals? After the separation process, how would you prove which is the salt and which is the sand? (10 points)

8. Complete the following table. (6 points)

          Element           Protons           Neutrons

          ²⁰Ne                10                    ___

          ____                20                     20

          ____                   8                     8

9. A student measured the length of a piece of paper (21.5 x 27.9cm) as 28 cm long. Is this measurement accurate? Is the measurement precise? (4 points)

10. Construct a table of the properties of the subatomic particles, Include their names, charge, mass, and location in the atom. (6 points)

11. How did John Dalton's atomic theory explain the law of definite proportions? (5 points)

12. Explain the difference(s) between an s electron and a p electron. (4 points)

13. Draw the Lewis dot structure for an atom of carbon. (1 point)

14. List the names of the elements in the molecule C₁₄H₁₂ClKN₃O₃S (4points)

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