Kaplan’s Sample Class for the DAT

Agenda DAT Overview Redox Reactions –The Survey of Natural Sciences –Oxidation-Reduction Reactions –Practice Questions The Perceptual Ability Test –Keyholes –Top-Front-End –Angle Ranking –Hole Punching –Cube Counting –Pattern Folding –Practice Questions Learn How to Score Higher

DAT Overview SectionBreakdown Survey of Natural Sciences90 minutes for 100 questions 40 Biology (scored 1–30) 30 General Chemistry (scored 1–30) 30 Organic Chemistry (scored 1–30) Perceptual Ability Test60 minutes for 90 questions Keyholes, Top-Front-End, Angle Ranking, Hole Punching, Cube Counting, Pattern Folding Scored 1–30 Break15 minutes Reading Comprehension Test60 minutes for 50 questions 3 passages 16–17 questions per passage Scored 1–30 Quantitative Reasoning Test45 minutes for 40 questions Scored 1–30

DAT Overview The Kaplan Question Strategy

Redox Reactions

The Survey of Natural Sciences 100 questions in 90 minutes –Consists of 40 Biology, 30 General Chemistry, and 30 Organic Chemistry questions Allows for use of a Periodic Table of the Elements –Accessible by clicking the “Exhibit” button Overview

The Survey of Natural Sciences 30 questions (30% of the Survey of Natural Sciences) Chemistry Topics

Redox Reactions Reduction: gain of electrons (GER). Oxidation: loss of electrons (LEO). Reducing agent: becomes oxidized; reduces something else. Oxidizing agent: becomes reduced; oxidizes something else. Oxidation-Reduction Reactions Redox Reactions 7%

Redox Reactions –Rule 1: In standard elemental form, oxidation # equals zero. –Rule 2: In a monatomic ion, oxidation # equals charge. –Rule 3: In a binary compound, oxidation # of the more electronegative element equals its usual ionic charge. –Rule 4: The sum of oxidation #s in a compound equals the overall charge of the compound. –Rule 5: Some elements usually have only one oxidation #. Oxidation Numbers

Question 1 A. 1 B. 2 C. 3 D. 4 E. 5 After completing and balancing the following reaction in basic solution, determine how many moles of AsO 4 3– are on the product side of the balanced reaction. MnO 4 – + AsO 3 3– → MnO 2 + AsO 4 3– 1.

Practice Questions 2–4

Practice Questions Question 1 of 3 A.Cu is the oxidizing agent; Ag is the reducing agent. B.Ag is the oxidizing agent; Cu is the reducing agent. C.Ag is the oxidizing agent; NO 3 is the reducing agent. D. NO 3 is the oxidizing agent; Cu is the reducing agent. E. Cu is the oxidizing agent; NO 3 is the reducing agent. What are the oxidizing and reducing agents in the following reaction? AgNO 3 (aq) + CuNO 3 (aq) → Ag (s) + Cu(NO 3 ) 2 (aq) 2.

Practice Questions Question 2 of 3 A. –2 B. –1 C. 0 D. +1 E. +3 What is the oxidation state of each nickel on the reactant side of the following reaction? 2 NiO(OH) + Cd + 2 H 2 O → 2 Ni(OH) 2 + Cd(OH) 2 3.

Practice Questions Question 3 of 3 A. 16 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O B. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O C. 16 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O D. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O E. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O What is the complete and balanced reaction that involves the reagents below? MnO 4 – + C 2 O 4 2– → Mn 2+ + CO 2 4.

Question 2 What are the oxidizing and reducing agents in the following reaction? AgNO 3 (aq) + CuNO 3 (aq) → Ag (s) + Cu(NO 3 ) 2 (aq) 2. A.Cu is the oxidizing agent; Ag is the reducing agent. B.Ag is the oxidizing agent; Cu is the reducing agent. C.Ag is the oxidizing agent; NO 3 is the reducing agent. D. NO 3 is the oxidizing agent; Cu is the reducing agent. E. Cu is the oxidizing agent; NO 3 is the reducing agent.

Question 3 A. –2 B. –1 C. 0 D. +1 E. +3 What is the oxidation state of each nickel on the reactant side of the following reaction? 2 NiO(OH) + Cd + 2 H 2 O → 2 Ni(OH) 2 + Cd(OH) 2 3.

Question 4 A. 16 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O B. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O C. 16 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O D. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O E. 8 H C 2 O 4 2– + 2 MnO 4 – → 2 Mn CO H 2 O What is the complete and balanced reaction that involves the reagents below? MnO 4 – + C 2 O 4 2– → Mn 2+ + CO 2 4.

Perceptual Ability Test

The Perceptual Ability Test 90 questions in 60 minutes 15 questions each from Keyholes, Top-Front-End, Angle Ranking, Hole Punching, Cube Counting, and Pattern Folding Overview

The Perceptual Ability Test Keyholes

The Perceptual Ability Test Top-Front-End

1. 2.

The Perceptual Ability Test Angle Ranking

A) B) C) D) A) B) C) D) A) B) C) D) A) B) C) D)

The Perceptual Ability Test Hole Punching

Tic tac toe –Start by drawing 3 x 3 lines –Draw in holes as you mentally unfold the folds step by step Strategy

Hole Punching 1. 2.

The Perceptual Ability Test A. 0 B. 1 C. 2 D. 3 E. 4 In the Example Figure, how many cubes have five of their sides painted? Cube Counting

Each figure has been constructed by cementing together identical cubes. After being cemented, each figure was painted on all sides EXCEPT for the bottom (the side on which the figure rests). The only hidden cubes are the ones necessary to support other cubes in the figure. The Rules

Cube Counting Each figure has been constructed by cementing together identical cubes. After being cemented, each figure was painted on all sides EXCEPT for the bottom (the side on which the figure rests). The only hidden cubes are the ones necessary to support other cubes in the figure. The Rules

Cube Counting Tallying the Cubes –Starting in one corner, identify each cube’s type –Count total number of cubes Strategy

Figure A

1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure A 1 SIDER 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY = 1 = 0 = 6 = 3 = 2 = 14 GIVEN

Question 8 A. 0 cube B. 1 cubes C. 2 cubes D. 3 cubes E. 4 cubes In Figure A, how many cubes have zero of their exposed sides painted? 8.

Question 9 A. 1 cube B. 2 cubes C. 3 cubes D. 4 cubes E. 5 cubes In Figure A, how many cubes have four of their exposed sides painted? 9.

Question 10 A. 3 cube B. 4 cubes C. 5 cubes D. 6 cubes E. 7 cubes In Figure A, how many cubes have two of their exposed sides painted? 10.

Figure B

1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY

Figure B 1 SIDER GIVEN 2 SIDER 3 SIDER 4 SIDER 5 SIDER 0 SIDER TALLY = 0 = 1 = 8 = 7 = 4 = 1 = 21

Question 11 A. 4 cube B. 5 cubes C. 6 cubes D. 7 cubes E. 8 cubes In Figure B, how many cubes have three of their exposed sides painted? 11.

Question 12 A. 0 cube B. 1 cubes C. 2 cubes D. 3 cubes E. 4 cubes In Figure B, how many cubes have one of their exposed sides painted? 12.

Question 13 A. 0 cube B. 1 cubes C. 2 cubes D. 3 cubes E. 4 cubes In Figure B, how many cubes have five of their exposed sides painted? 13.

The Perceptual Ability Test Pattern Folding

1. 2.

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