Answer Sheet for the SAT II Chemistry Practice Test 8

1.D

2.B

3.B

4.E

5.D

6.B

7.A

8.A

9.D

10.D

SAT II Chemistry Practice Test 8

9.Which of the following compound is called ethane?

(A) CH4
(B) C2H2
(C) C2H4
(D) C2H6
(E) C6H6

10.If the pH of a solution increase the concentration of the H+ ions in the solution

(A) increases
(B) decreases
(C) remains constant
(D) depends on the solution
(E) depends on the initial concentration of the solution.

7. Which of the following gases has a higher density than oxygen (measured at the same conditions)?

(A) N2
(B) F2
(C) CH4
(D) H2
(E) H2O(vapors)

8. The correct geometry for NH3 is
(A) trigonal planar
(B) tetrahedral
(C) bent
(D) linear
(E) None of the above.

9. Which of the following statements about carbon monoxide is NOT true?

(A) is less dense than CO2
(B) is a polar substance
(C) is a covalent substance
(D) it contains 2 sigma bonds
(E) all of them are true

10. The values for the atomic radii are increasing correctly in case:

(A) Li>Na>K>Cs
(B) Cs>K>Na>Li
(C) Cs>Na>K>Li
(D) Li>K>Na>Cs
(E) Li = Na = K= Cs

7. Consider the following electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2
The compound formed by this element with oxygen has the formula:

(A) MO
(B) MO2
(C) M2O
(D) M2O2
(E) M2O3

8.Consider the following acid : H3PO2.Which of the following is true?

(A) it is a monoprotic acid
(B) it is a diprotic acid
(C) it is a triprotic acid
(D) does not exist
(E) it does not present acidic properties

9.The Ksp of PbSO4 is 1x 10 ^ -8. the solubility of PbSO4 is:

(A) 10^-8
(B) 10^-1
(C) 10^-2
(D) 10^-4
(E) 10^-16

10.Which of the following bonds is intermolecular ?

(A) ionic bond
(B) covalent bond
(C) metallic bpnd
(D) hydrogen bond
(E) None of them

Answer Sheet for the SAT II Chemistry Practice Test 8.

Answer Sheet for the SAT II Chemistry Practice Test 7.

1.B

2.B

3.A

4.C

5.E

6.C

7.C

8.A

9.C

10.E

SAT II Chemistry Practice Test 7

1. Consider the reaction (all substances are gaseous)

4NH3 + 5O2 <=> 4NO + 6H2O

What would happen if NO were added?

(A) The equilibrium will shift to the right
(B) The equilibrium will shift to the left
(C) The equilibrium will remain the same
(D) The reaction will not take place any more
(E) None of the above

2. An atom of sodium has a mass number of 23 and an atomic number of 11
How many neutrons does it have?

(A) 11
(B) 12
(C) 23
(D) 44
(E) can not be determined

3. An atom of fluorine has a mass number of 19 and an atomic number of 9
How many electrons does it have?

(A) 9
(B) 10
(C) 19
(D) 28
(E) can not be determined

4. A substance contains 55 grams of oxygen 65 grams of carbon and 30 grams of hydrogen. How many grams of oxygen will be in 200 grams substance?

(A) 27.5 g
(B) 55 g
(C) 73.33 g
(D) 110 g
(E) Not enough information.

5. Draw the structural formula for the BF3. How many unshared pairs of electrons are in the outer shell of the central Boron atom?

(A) 7
(B) 5
(C) 3
(D) 1
(E) 0

6. Which of the following solution, if dissolved in water, has a pH < 7?

(A) MgO
(B) NH3
(C) CO2
(D) Ba(OH)2
(E) PbO2

7. Of the following elements, which is most likely to form a negative ion with a charge of -2?

(A) F
(B) N
(C) S
(D) Mg
(E) Be

8. The hybridization associated with the central atom of a molecule in which all the bond angles are 180 o is

(A) sp
(B) sp2
(C) sp3
(D) sp3d
(E) sp3d2

9.How many isomers does pentane C5H12 have?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

10. Which of the following element is the most electronegative?

(A) Cl
(B) N
(C) H
(D) Na
(E) O

Answer Sheet for the SAT II Chemistry Practice Test 7.

Answer Sheet for the SAT II Chemistry Practice Test 6

1. C

2. E

3.D

4.B

5.D

6.D

7.E

8.D

9.D

10.C

1. Which compound has the highest percent by mass of carbon?

(A) CH4
(B) CO2
(C) C6H6
(D) CH3OH
(E) C7H8

2. When the equation for the reaction represented below is balanced and all coefficients are reduced to lowest whole-number terms, the coefficient for Fe(s) is

…Fe(s) + …O2 => …Fe2O3 (s)

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4

Which of the above represents the formula for the most common compound of A and B, where A and B represent given pairs of elements or polyatomic ions as indicated below?
3.A = Na and B = O2

(A) AB
(B) AB2
(C) AB3
(D) A2B
(E) A2B3

4. A = C and B = O

(A) AB
(B) AB2
(C) AB3
(D) A2B
(E) A2B3

5. A = NH4+ and B = (SO4)2-

(A) AB
(B) AB2
(C) AB3
(D) A2B
(E) A2B3

6. Which of the following compounds is a semimetal ?

(A) Na

(B) Be

(C) Cl

(D) As

(E) N

7. Which of the following is a basic oxide?

(A) SO3
(B) HCl
(C) FeCl3
(D) AgCl
(E) MgO

8. Which of the following is insoluble in water at 25 C?

(A) SO3
(B) HCl
(C) FeCl3
(D) AgCl
(E) MgO

9. The increasing order of the ionic/atomic radius is correctly shown in:

(A) K + > Ar > Cl-
(B) Cl- > K+ > Ar
(C) K+ > Cl- > Ar
(D) Cl- > Ar > K+
(E) Ar > Cl- > K+

10. Which of the following is an alkali earth metal?

(A) Li
(B) Na
(C) Mg
(D) Al
(E) Pb

Answer Sheet for the SAT II Chemistry Practice Test 6.

Answer Sheet for the SAT II Chemistry Practice Test 5

1.D

2.C

3.C

4.C

5.A

6.A

7.E

8.D

9.B

10.A

SAT II Chemistry Practice Test 5 Questions:

1. Contains sp hybridised carbons.

(A) CH4
(B) CH3COOH
(C) CH3CH2OH
(D) C2H2
(E) CH3OCH3

2.Which of the above represents the formula for the most common compound of A and B, where A and B represent given pairs of elements or polyatomic ions as indicated below?

A = Al and B = F

(A) AB
(B) AB2
(C) AB3
(D) A2B
(E) A2B3

3. Which of the following is a salt that forms acidic aqueous solutions

(A) SO3
(B) HCl
(C) FeCl3
(D) AgCl
(E) MgO

4. Which of the following is the density of oxygen at STP?

(A) 1.0 g/L
(B) 1.2 g/L
(C) 1.4 g/L
(D) 16g/L
(E) 32g/L

5. H2S has a density of 1,52 g/L at STP. Which of the following gave a density at STP less than that of H2S?

(A) O2
(B) H2Se
(C) Cl2
(D) CO2
(E) All of them

6. In a galvanic cell the cathode is charged

(A) positive
(B) negative
(C) neutrum
(D) it depends on the type of galvanic cell
(E) it depends on the reaction inside the galvanic cell

7. Which of the following molecules contain only sp3 hybridized carbons?

(A) CH4
(B) CH3CH2CH3
(C) C5H12
(D) CH4 and CH3CH2CH3
(E) All of them

8.It is a transitional element:

(A) B
(B) Al
(C) Na
(D) Zn
(E) C

9. If dissolved in water, has a pH < 7.

(A) CH4
(B) CH3COOH
(C) CH3CH2OH
(D) C2H2
(E) CH3OCH3

10. If x grams of S are needed to obtain 0.4 grams of SO3, how many grams of SO2 can be obtained from the same amount of S?

(A) 0.32 g
(B) 0.62 g
(C) 0.40 g
(D) 0.16 g
(E) Can not be calculated from the given data.

Answer Sheet for the SAT II Chemistry Practice Test 5

Answer Sheet for the SAT II Chemistry Practice Test 4

1.D

2.C

3.B

4.C

5.A

6.E

7.A

8.D

9.B

10.A

1. Which of the following substances has the highest melting point?

(A) H2O
(B) SO3
(C) NaCl
(D) NaF
(E) NO2

2.Which of the following elements is an alkali metal

(A) B
(B) Al
(C) Na
(D) Zn
(E) C

3. Which molecule(s) is/are a hydrocarbon(s)?

(A) CH4
(B) CH4 and C2H2
(C) CH3CH2OH
(D) C2H2
(E) CH3OCH3

4.Which of the following gases is the most dense when all are measured under the same conditions?

(A) H2
(B) O2
(C) Cl2
(D) CO2
(E) NO2

5. Which of the following is known to produce acid rain?

(A) SO3
(B) HCl
(C) FeCl3
(D) AgCl
(E) MgO

6. Which response includes true statements concerning the characteristics of ionic compounds?

I they have low melting points
II they are soluble in water
III their aqueous solution are very good conductors of electricity
IV Are soluble in protic solvents

(A) I and III
(B) II and III
(C) II and IV
(D) III and IV
(E) II, III, and IV

7. The ground state electron configuration of the chromium atom (Z = 24) is characterized by which of the following?

I the presence of unpaired electrons
II fully occupied d-orbitals
III 4s orbital is fully occupied

(A) I
(B) II
(C) III
(D) I and III
(E) I, II and III.

8.What is the oxidation number of sulphur in Na2SO4 ?

(A) -4
(B) 2
(C) 4
(D) 6
(E) -6

9. Which of the following substance has a trigonal planar geometry?

(A) H2O
(B) SO3
(C) NaCl
(D) NaF
(E) NO2

10.The hydroxide of which of the following elements is acidic if dissolved in water

(A) B
(B) Al
(C) Na
(D) Zn
(E) C

Answer Sheet for the SAT II Chemistry Practice Test 4.