Atomic Numbers, Elements, Octet Rule & Valences


1. Determine the possible oxidation numbers using the Octet Rule.

A) Sulfur _____ _____

B) Sodium _____ _____

C) Calcium _____ _____

D) Bromine _____ _____

E) Phosphorus _____ _____

2. Determine the valence of the following elements.

A) Magnesium _____

B) Potassium _____

C) Aluminum _____

D) Oxygen _____

E) Fluorine _____

3. How many neutrons does each of the following elements possess.

A) Magnesium _____

B) Potassium _____

C) Iron _____

D) Phosphorus _____

E) Carbon _____

4. How many protons in each of the following.

A) Nitrogen _____

B) Chlorine _____

C) Uranium _____

D) Gold _____

E) Iron _____

5. Name the seven energy levels and give the maximum number of electrons in each.

  1. _____ _____ 4. _____ _____ 7. _____ _____
  2. _____ _____ 5. _____ _____
  3. _____ _____ 6. _____ _____

6. How many electrons are found in each of the following elements.

A) Boron _____

B) Cobalt _____

C) Strontium _____

D) Sulfur _____

E) Silver _____

7. Name the sub-shells for the fifth energy level and the maximum number of electrons found in each.

8. Give the formula for the following polyatomic ions.

A) Sulfate

B) Peroxide

C) Nitrate

D) Dichromate

E) Hydroxide

9. Name each of the following polyatomic ions.

A) C2H3O2-

B) NO2-

C) SO3-2

D) CrO4-2

E) MnO4-

10. Write the electron configuration for each of the following:

A) Bromine

B) Calcium

Element Section

Fill in the blank for each of the following. Spelling is absolutely critical. Take care! The first blank requires the SYMBOL and the second is its NAME

  1. ___ __________ The lightest metal which reacts rapidly with water to form hydrogen.
  2. ___ __________ It is the lightest element.
  3. ___ __________ The pure element exists in a yellow form which ignites in the air and also in a less reactive red modification.
  4. ___ __________ It is the most abundant component of the atmosphere.
  5. ___ __________ It is the most abundant metal in the earth's crust.
  6. ___ __________ It is the most reactive nonmetal known.
  7. ___ __________ It is a dark purple solid.
  8. ___ __________ A very dense yellow metal which occurs in nature as a metal.
  9. ___ __________ It produces a red-orange color in an electrical discharge.
  10. ___ __________ It is the coating on galvanized iron.
  11. ___ __________ It exists in a soft black form and a clear hard modification.
  12. ___ __________ It is a dark reddish purple liquid.
  13. ___ __________ A colorless, oderless, tasteless gas which is essential for human life.
  14. ___ __________ It is the principle mineral component of bones and teeth.
  15. ___ __________ It is a yellow colored non-metal.
  16. ___ __________ This diatomic element is added to drinking water.
  17. ___ __________ It is a common metal and the fourth most abundant element in the earth's crust.
  18. ___ __________ It is a metal which is liquid at room temperature.
  19. ___ __________ It is the lightest inert gas.
  20. ___ __________ Sand is an oxide of this element.

Metric Section

  1. _____ In the metric system, the meter is a unit of a) pressure b) volume c) weight d) length e) none of these.
  2. _____ Which of the following is a unit of mass in the metric system? a) centimeter b) milligram c) liter d) cubic centimeter e) none of these.
  3. _____ The major advantage in using the metric system of measurement lies in the fact that a) it is a decimal system b) it makes use of Latin Prefixes c) its basic unit of volume is approximately equal to one quart d) much larger measurements are possible using the metric system e) none of these.
  4. _____ A millimeter is equivalent to a) 10 meters b) 1/10 of a meter c) 1000 meters d) 1/1000 of a meter e) none of these.
  5. _____ A milliliter is equivalent to a) a quart b) 1000 liters c) 100 liters d) 1/1000 of a liter e) 1/10 of a liter.
  6. _____ Which of the following is a unit of heat energy? a) degree b) kilogram c) calorie d) centigrade e) celsius
  7. _____ When a substance has more heat energy than its surroundings it a) tends to absorb more heat b) becomes unstable c) tends to achieve the temperature of its surroundings by heat loss d) under-goes a phase change e) none of these.
  8. _____ Which of the following is used to determine the density of a substance? a) a barometer b) a calorimeter c) ratio of mass to volume d) ratio of area to weight e) none of these.
  9. _____ Volume is measured in which of the following units? a) temperature b) degrees c) milliliters d) calories e) kilometers.
  10. _____ Which of the following is equivalent to 10 millimeters? a) a meter b) a kilometer c) 1.0 X 102 meters d) 1.0 X 10-3 kilometers e) 1.0 X 10-5 kilometers.
  11. _____ 2.50 X 10-3 kilometers is equivalent to which of the following? a) .0250 kilometers b) .00250 kilometers c) 2500 meters d) 25 meters e) none of these.
  12. _____ The amount of heat required to raise the temperature of 10 grams of water 5 degrees centigrade is a) determined by the formula w=q x t b) determined by the formula q=w x t c) about 500 kilocalories d) determined by the formula H.R. = mass X Sp. Heat X Temp. change e) precisely 50 kilocalories
  13. _____ Which of the following is the product of (3x104) X (4.4x10-7) expressed in exponential notation? a) 1.32 X 10-2 b) 1.32 X 10-11 c) 13.2 X 103 d) 1.32 X 103 e) 1.32 X 1011.
  14. _____ The meter is the standard unit of length in the a) decimal system b) metric system c) English system d) digits system.
  15. _____ One quart is relates to which numerical value a) 39.37 b) 2.54 c) 946 d) 2.2 e) 453.6
  16. _____ The volume of a piece of wood 7 cm X 3 cm X 1 cm is a) 210 cm b) 21 cm c) 210 cm2 d) 21 cm3.
  17. _____ A unit of measurement that is a metric unit is the a) ounce b) milliliter c) gallon d) pound.
  18. _____ On a trip to the moon, an astronaut's mass will a) increase only b) decrease only c) first decrease, then increase d) remain the same.
  19. _____ The volume of objects is often measured in a) pounds b) carats c) cubic centimeters d) square feet.
  20. _____ Two units of measurement are required to express a) time b) mass c) density d) length

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