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

Section Breakdown

Survey of Natural Sciences 90 minutes for 100 questions• 40 Biology (scored 1–30)• 30 General Chemistry (scored 1–30)• 30 Organic Chemistry (scored 1–30)

Perceptual Ability Test 60 minutes for 90 questions• Keyholes, Top-Front-End, Angle Ranking, Hole

Punching, Cube Counting, Pattern Folding• Scored 1–30

Break 15 minutes

Reading Comprehension Test 60 minutes for 50 questions• 3 passages• 16–17 questions per passage• Scored 1–30

Quantitative Reasoning Test 45 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 AsO43– are on the product side of the balanced reaction.

MnO4– + AsO3

3– → MnO2 + AsO43–

1.

Practice Questions 2–4

Practice Questions 2–4

Question 2

What are the oxidizing and reducing agents in the following reaction?

AgNO3 (aq) + CuNO3 (aq) → Ag (s) + Cu(NO3)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; NO3 is the reducing agent.

D. NO3 is the oxidizing agent; Cu is the reducing agent.

E. Cu is the oxidizing agent; NO3 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 H2O → 2 Ni(OH)2 + Cd(OH)2

3.

Question 4

A. 16 H+ + 5 C2O42– + 2 MnO4

– → 2 Mn2+ + 10 CO2 + 8 H2O

B. 8 H+ + 5 C2O42– + 2 MnO4

– → 2 Mn2+ + 10 CO2 + 4 H2O

C. 16 H+ + 5 C2O42– + 2 MnO4

– → 2 Mn2+ + 5 CO2 + 8 H2O

D. 8 H+ + 5 C2O42– + 2 MnO4

– → 2 Mn2+ + 5 CO2 + 8 H2O

E. 8 H+ + 5 C2O42– + 2 MnO4

– → 2 Mn2+ + 10 CO2 + 8 H2O

What is the complete and balanced reaction that involves the reagents below?

MnO4– + C2O4

2– → Mn2+ + CO2

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

Keyholes

1.

2.

3.

The Perceptual Ability Test

Top-Front-End

Top-Front-End

1.

2.

The Perceptual Ability Test

Angle Ranking

Angle Ranking

A) 3-1-4-2B) 1-4-3-2C) 3-4-2-1D) 3-1-2-4

1. 2.

3. 4.

A) 3-1-2-4B) 1-3-2-4C) 3-1-4-2D) 1-3-4-2

A) 4-1-2-3B) 1-4-3-2C) 4-1-3-2D) 1-4-2-3

A) 3-1-4-2B) 1-3-4-2C) 1-3-2-4D) 3-2-1-4

The Perceptual Ability Test

Hole Punching

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

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

Figure A

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure A

Figure A

1 SIDER

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

= 1

= 0

= 6

= 3

= 2

= 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

Figure B

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

Figure B

1 SIDER

GIVEN

2 SIDER

3 SIDER

4 SIDER

5 SIDER

0 SIDER

TALLY

Figure B

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

Pattern Folding

1.

2.

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