2019

AP®

ChemistrySample Student Responses and Scoring Commentary

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Inside:

Free Response Question 1

R Scoring Guideline

R Student Samples

R Scoring Commentary

AP® CHEMISTRY

2019 SCORING GUIDELINES

© 2019 The College Board.

Visit the College Board on the web: collegeboard.org.

Question 1

AP® CHEMISTRY

2019 SCORING GUIDELINES

© 2019 The College Board.

Visit the College Board on the web: collegeboard.org.

Question 1 (continued)

1 mol

60.06 g

0.0897 mol = 17.9

0.00500 LM

AP® CHEMISTRY

2019 SCORING GUIDELINES

© 2019 The College Board.

Visit the College Board on the web: collegeboard.org.

Question 1 (continued)

⋅

solnSD

2 2 2 2

2 2

2 2

(H NCONH ( )) (H NCONH ( ))

70.1 J/(mol K) (H NCONH ( )) 104.6 J/(mol K)

(H NCONH ( )) 174.7 J/(mol K)

solnS S aq S s

S aq

S aq

solnSD

solnS

‒

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

© 2019 The College Board. Visit the College Board on the web: collegeboard.org.

AP® CHEMISTRY

2019 SCORING COMMENTARY

© 2019 The College Board.

Visit the College Board on the web: collegeboard.org.

Question 1

Note:

Overview

solnS

solnS

solnS

Sample: 1A

Score: 10

Sample: 1B

Score: 8

AP® CHEMISTRY

2019 SCORING COMMENTARY

© 2019 The College Board.

Visit the College Board on the web: collegeboard.org.

Question 1 (continued)

Sample: 1C

Score: 6