Final Exam ReviewFall 2009

Practice Test

Pick the type of chemical reaction (synthesis, decomposition, single replacement, double replacement, combustion, acid-base reaction)

1. AB + CD AD + CB2. AB A + B3. HCl + NaOH H2O + NaCl

4. C8H4 + 9O2 8CO2 + 2H2O

5. SrO + Br2 SrBr2 + O2

Balance the following equation

6. Al2O3 Al + O2

A. 1, 2, 1B. 2, 4, 3C. 2, 4, 1D. 3, 2, 4

Balance the following equation

7. BF3 + CaCl2 BCl3 + CaF2

A. 1, 2, 1, 2B. 2, 1, 2, 1C. 3, 2, 3, 2D. 2, 3, 2, 3

8.What law states that the mass of all the reactants must equal the mass of all of the products.

A. Law of conservation of energyB. Law of conservation of moleculesC. Law of conservation of reactantsD. Law of conservation of matter

9. If 56.0 g of reactants combust, how many grams of products will form?

A. 56.0 g of productB. Less than 56.0 g of productC. More than 56.0 g of productD. Impossible to tell with given

information

10. What type of bond is formed when nitrogen and chlorine bond?

A. IonicB. HydronicC. CovalentD. Metallic

Use the following symbol Li

11.What is the number of protons?A. 3 C. 7B. 4 D. 10

12.What is the number of electrons?A. 3 C. 7B. 4 D. 10

13. What is the number of neutrons?A. 3 C. 7B. 4 D. 10

7

3

14. What is defined as the amount of kinetic energy in a system?

A. DensityB. MatterC. SpeedD. Temperature

15. Who was responsible for the discovery of the proton?

A. DemocritusB. ProustC. ThomsonD. Rutherford

16. What electron transition represents a loss in energy

A. 4th energy level to 5th energy level B. 2nd energy level to 1st energy level C. 5th energy level to 6th energy level D. 3rd energy level to 4nd energy level

17. Which of the following has a smaller radius?

A. Na +

B. NaC. K+

D. K

18. What is an atom called that has a different number of neutrons then an atom of the same element?

A. IsotopeB. IonC. AtomD. Positron

Label the following as a metal or nonmetal.

19. [Kr] 5s2 4d10 5p5

20. [Ar] 4s1

Pick the period and group for each

21. Determine the period and group for [Ar] 4s2 3d10 4p6

A. 4, 8A C. 7A, 4B. 4, 8B D. 6B, 3

22. Which of the following has the least tendency to attract electrons?

A. SulfurB. ChlorineC. PhosphorusD. Sodium

23. Predict the products of the following reaction:

HF + Mg(OH)2 ->

A. MgF + H2O

B. MgF2 + H2O

C. FMg2 + H2O

D. Mg2F + H2O

24. A grenade is thrown into the air where it explodes. Which type of energy is present in the scenario?

A. Chemical EnergyB. Thermal EnergyC. Gravitational EnergyD. B & C onlyE. A, B & C

25. Using the law of conservation of energy, chose the answer that correctly shows the transfer of energy from the previous scenerio.

A. Mechanical, chemical, thermalB. Mechanical, gravitational, thermalC. Thermal, mechanical, kineticD. Chemical, thermal, kinetic

26. How many valence electrons do elements in group 7A have?

A. 1 electron B. 3 electronsC. 7 electronsD. 5 or fewer electrons

27. Alkali metals are extremely

A. HardB. RadioactiveC. BrittleD. Reactive

28. Predict the product that forms in the following reaction:

Mg + HBr

A. MgBr + H2

B. MgBr2 + H

C. MgBr2 + H2

D. MgBr + H

29. Which block has the most reactive metals?

A. s blockB. d blockC. p blockD. f block

Pick the correct formula for the following.

30. Copper (I) oxideA. CuO C. Cu2O

B. CuO2 D. Cu2O2

31. Trinitrogen pentachlorideA. NCl C. N3Cl5B. N5Cl3 D. Cl3N6

32. What did J.J. Thomson develop/discover?

A. The atomB. The planetary model of the atomC. The electronD. The proton

33. What did Democritus develop/discover?

A. The atomB. The planetary model of the atomC. The electronD. The proton

34. Which of the following has the same total number of electrons as Br-1?

A. SeB. KrC. BrD. Cl-1

35. Place the following in correct chronological order

I. Discovery of the protonII. Idea of atomIII. Planetary model of the atomIV. Belief in 4 major elementsV. Discovery of the electron

A. III, V, II C. IV, III, IB. I, V, IV D. II, V, I

36. What are two properties of metals?

A. Low electronegativity and poor conductors of electricity

B. High electronegativity and good conductors of electricity

C. Low electronegativity and good conductors of electricity

D. High electronegativity and poor conductors of electricity

37. Particles passing through a cathode ray tube helped prove that atoms have . . .

A. ElectronsB. ProtonsC. NeutronsD. Fignewtons

38. What is the ratio of calcium to bromine in CaBr2?

A. 1 Ca : 2 BrB. 2 Ca : 1 BrC. 2 Ca : 2 BrD. 1 Ca : 1 Br

Answers

1. DR 14. D 27. D2. Dec 15. D 28. C3. AB 16. B 29. A4. Comb 17. A 30. C5. SR 18. A 31. C6. B 19. NM 32. C7. D 20. M 33. A8. D 21. A 34. B9. A 22. D 35. D10. C 23. B 36. C11. A 24. E 37. A12. A 25. D 38. A13. B 26. C