SAT Chemistry Online Practice Test 4: Part D

Test Information

Question 16 questions

Time 10 minutes

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Directions: Every question below contains two statements, I in the left-hand column and II in the right-hand column. For each question, decide if statement I is true or false and whether statement II is true or false, and fill in the corresponding T or F ovals on your answer sheet. *Fill in oval CE only if statement II is a correct explanation of statement I.

1. Elements in the upper/left corner of the Periodic Table are active metals
BECAUSE
metals have larger ionic radii than their atomic radii.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

2. A synthesis reaction that is nonspontaneous and has a negative value for its heat of reaction will not occur until some heat is added
BECAUSE
nonspontaneous exothermic re actions need enough activation energy to get them started.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

3. Transition elements in a particular period may have the same oxidation number
BECAUSE
they have a complete outer energy level.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

4. When a crystal is added to a supersaturated solution of itself, the crystal does not appear to change
BECAUSE
the supersaturated solution is holding more solute than its normal solubility.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

5. Equilibrium is a static condition
BECAUSE
at equilibrium, the forward reaction rate equals the reverse reaction rate.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

6. The ionic bond is the strongest bond
BECAUSE
ionic bonds have electrostatic attraction due to the loss and gain of electron(s).

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

7. In the equilibrium reaction N2(g) + 3H2(g) ←→ 2NH3(g) + heat when the pressure in the reaction chamber is increased, the reaction shifts to the right
BECAUSE
the increase in pressure causes the reaction to shift to the right to decrease the pressure since 4 volumes on the left become 2 volumes on the right.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

8. If the forward reaction of an equi librium is exothermic, adding heat to the system favors the reverse reaction
BECAUSE
additional heat causes a stress on the system, and the system moves in the direction that releases the stress.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

9. An element that has an electron configuration of 1s2 2s2 2p6 3s2 3p6 3d3 4s2 is a transition element
BECAUSE
the transition elements from scandium to zinc are filling the 3d orbitals.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

10. The most electronegative elements in the periodic chart are found among nonmetals
BECAUSE
electronegativity is a measure of the ability of an atom to draw valence electrons to itself.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

11. Basic anhydrides react in water to form bases
BECAUSE
metallic oxides react with water to form solutions that have an excess of hydroxide ions.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

12. There are 3 moles of atoms in 18 grams of water
BECAUSE
there are 6 × 1023 atoms in 1 mole.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

13. Benzene is a good electrolyte
BECAUSE
a good electrolyte has charged ions that carry the electric current.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

14. Normal butyl alcohol and 2-butanol are isomers
BECAUSE
isomers vary in the number of neutrons in the nucleus of the atom.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

15. The reaction of CaCO3 and HCl goes to completion
BECAUSE
reactions that form a precipitate tend to go to completion.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE

16. A large number of alpha particles were deflected in the Rutherford experiment
BECAUSE
alpha particles that came close to the nucleus of the gold atoms were deflected.

A. T,T
B. T,F
C. F,T
D. F,F
E. T,T,CE