Chemical and Environmental Mock Test

7/24/2019 Chemical and Environmental Mock Test

1/6

Agape Review Center

Mock Test

Chemical and Environmental Review

Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) A consistent explanation of known observations is called

A) a prediction. B) a theory. C) an experiment. D) a hypothesis.

2) Which of the following volumes is equal to 10 mL?

A) 0.10 L B) 0.00010 kL C) 10 dm3 D) 10 cm3

3) Which of the following numbers has the greatest number of significant figures?

A) 0.201 B) 6.02 1024 C) 418000 D) 0.5070

4) Which element has the chemical symbol, Au?

A) gold B) silver C) argon D) aluminum

5) Mendeleev arranged the elements according toA) atomic weight and chemical reactivity.

B) atomic number and atomic weight.

C) electron configuration and atomic weight.

D) physical state and relative abundance.

6) The horizontal rows of the periodic table are called

A) triads. B) elements. C) groups. D) periods.

7) Most elements in the periodic table are

A) semi-metals. B) noble gases. C) metals. D) non-metals.

8) Which of the following statements doesnotdescribe aphysicalproperty of chlorine?

A) The color of chlorine gas is green.

B) Chlorine combines with sodium to form table salt.

C) The density of chlorine gas at standard temperature and pressure is 3.17 g/L.

D) The freezing point of chlorine is -101C.

9) All of the following elements are nonmetals except

A) carbon. B) antimony. C) hydrogen. D) oxygen.

10) The existence of electrons in atoms of all elements was demonstrated by

A) Millikan's oil drop experiment.B) Rutherford's gold foil experiment.

C) Thomson's cathode ray tube experiment.

D) None of the above.

11) Which of the following two atoms are isotopes?

A) C612

and C613

B) Ar1840

and Ar2040

C) Cl1735

and Cl3580

D) Mg1224

and C612


2/6

12) What are the possible values oflifn= 5?

A) -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5 B) 5

C) 0, 1, 2, 3, or 4 D) -4, -3, -2, -1, 0, +1, +2, +3, or +4

13) The solid compound, Na2CO3, contains

A) Na+ions and CO32-ions. B) Na2+and CO32-ions.

C) Na2CO3molecules. D) Na+, C4+, and O2-ions.

14) Covalent bonding is a

A) sharing of electrons. B) gain of electrons.

C) transfer of electrons. D) loss of electrons.

15) A chlorine atom in Cl2should have a

A) partial charge -. B) charge of 0.

C) charge of 1-. D) partial charge +.

16) The formula for dinitrogen trioxide is

A) N2O3.B) N(OH)3. C) (NO3)2. D) N3O2.

17) Consider a molecule with the following connections:

When a valid electron dot structure is written, how many double bonds will the molecule contain?

A) 0 B) 1 C) 4 D) 2

18) What is thesumof the coefficients when the following equation is balanced using the lowest, whole numbered

coefficients?

___ PH3(g) + ___ O2(g)___ P4O10(s) + ___ H2O(g)

A) 12 B) 22 C) 19 D) 10

19) What is the molar mass of Co(NO3)2?

A) 121 g/mol B) 183 g/mol C) 90 g/mol D) 152 g/mol

20) How many moles of CuO can be produced from 0.450 mol of Cu2O in the following reaction?

2 Cu2O(s) + O2(g)4 CuO(s)

A) 0.450 mol B) 0.225 mol C) 1.80 mol D) 0.900 mol

21) When silver nitrate reacts with barium chloride, silver chloride and barium nitrate are formed. How many grams of

silver chloride are formed when 10.0 g of silver nitrate reacts with 15.0 g of barium chloride?

A) 8.44 g B) 18.8 g C) 11.9 g D) 9.40 g

22) Which of the following isnota type of energy or energy transfer?

A) chemical energy B) pressure


3/6

C) work D) heat

23) The first law of thermodynamics

A) is a statement of conservation of energy.

B) defines chemical energy.

C) provides a criterion for the spontaneity of a reaction.

D) defines entropy.

24) Which of the following instruments directly measures the pressure of a gas?A) spectrometer B) gas chromatograph

C) manometer D) polarimeter

25) The SI unit for pressure is the

A) pascal. B) newton. C) MM Hg. D) atmosphere.

26) Which of the following equations represents "Boyle's law"?

A)PV = k B)V = nk C) P/V= k D)V/T = k

27) "Equal volumes of different gases at the same temperature and pressure contain the same molar amounts" is another

way of stating

A) Avogadro's law. B) Charles' law.

C) Boyle's law. D) Graham's law.

28) If the number of moles of gas is doubled at constant temperature and volume, the pressure of the gas28)______

A) is doubled. B) remains the same.

C) is halved. D) is quadrupled.

29) What is the density of fluorine gas at STP?

A) 1.55 g/L B) 1.70 g/L C) 0.848 g/L D) 0.590 g/L

30) At STP how many grams of Mg are required to produce 35 mL of H2in the reaction shown below?

Mg(s) + 2 HCl(aq)H2(g) + MgCl2(aq)

A) 0.035 g B) 26 g C) 29 g D) 0.038 g

31) The mixing of different gases by random molecular motion with frequent collisions is called

A) compressibility. B) effusion.

C) diffusion. D) Avogadro's law.

32) Which isnota solution?A) wine B) fog

C) hydrochloric acid D) brass

33) Which of the following mixtures have components which can be separated by filtration?

A) colloids B) suspensions C) solutions D) all of the above

34) Molarity is defined as moles of solute per

A) total moles present. B) kilogram of solvent.

C) mole of solvent. D) liter of solution.


4/6

35) What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol, C2H5OH, in 53.6 g of water?

A) 0.272 B) 0.214 C) 0.106 D) 0.0964

36) What is the molality of ethanol in a solution made by dissolving 14.6 g of ethanol, C2H5OH, in 53.6 g of water?

A) 5.91m B) 272m C) 0.00591m D) 0.272m

37) What volume of 0.716 M KBr solution is needed to provide 10.5 g of KBr?

A) 63.2 mL B) 14.7 mL C) 123 mL D) 7.52 mL

38) What is the molality of a glucose solution prepared by dissolving 18.0 g of glucose, C6H12O6, in 125.9 g of water?

A) 0.143m B) 0.695m C) 7.94 10-4m D) 0.794m

39) A 1.30 M solution of CaCl2in water has a density of 1.11 g/mL. What is the molality?

A) 1.44mCaCl2B) 1.17mCaCl2 C) 1.35mCaCl2 D) 1.25mCaCl2

40) An aqueous CsCl solution is 8.00 mass % CsCl and has a density of 1.0643 g/mL at 20C. What is the boiling point of

this solution?Kb= 0.51C/mfor water.

A) 100.53C B) 103.8C C) 104.3C D) 100.27C

41) The Stockholm Convention is a global treaty that aims to protect the environmental and human health from this

hazards.

A)greenhouse gases B) heavy metals C) hexavalent chroimium D) Persistent organic pollutants

42) When was the Clean Air Act signed?

A) July 27, 2000 B) July 27, 1998 C) July 24, 1999 D) January 24, 1999

43) The Phillipine Clean Air Act of 1999 is also known as:

A) RA 1655 B) RA 8749 C) RA 9003 D) RA 8879

44) The affectivity of banning f incineration all over the country will start/started on:

A) 1999 B) 2020 C) 2003 D) 2002

45) The Food, Drugs and Cosmetics Act is

A) RA 3180 B) RA 3720 C) RA 3620 D) RA 3820

46) Define as the burning of municipal, bio-medical and hazardous wastes, which process emits poisonous and toxic

flame.

A) Eco-file B) Incineration C) Segregation D) Composting


5/6

47) Philippine Clean Water Act of 2004 is also known as

A) RA 9275 B) RA 2346 C) RA 6789 D) RA 6798

48) It means the application of an integrated, preventive environmental strategy to processes, products, services to

increase efficiency.

A) ISO B) Cleaner Production C) Continuous Improvement D) 5S

49) Ecological Solid Waste Management Act of 2000 is also known as

A) RA 9001 B) RA 9002 C) RA 9003 D) 9005

50) This refer to controlled decomposition of organic matter by micro-organism mainly bacteria.

A) kaingin B) dumping C) degrading D) composting


6/6

Answer Key

1) B

2) D

3) D

4) A

5) A

6) D

7) C8) B

9) B

10) C

11) A

12) C

13) A

14) A

15) B

16) A

17) D

18) C19) B

20) D

21) A

22) B

23) A

24) C

25) A

26) A

27) A

28) A

29) B30) D

31) C

32) B

33) B

34) D

35) D

36) A

37) C

38) D

39) C

40) A41) D

42) C4! "

44! C4#! $

4%! $

4&! A

4'! $4(! C

#)! "

Documents

Chemical and Environmental Mock Test