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FOR TEACHERS ONLY
The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION
PHYSICAL SETTING/CHEMISTRY
Wednesday, June 20, 2018 — 9:15 a.m. to 12:15 p.m., only
SCORING KEY AND RATING GUIDE
P.S.–CH
Directions to the Teacher: Refer to the directions on page 2 before rating student papers. State Education Department’s web site during the rating period. Check this web site at:Updated information regarding the rating of this examination may be posted on the New York http://www.p12.nysed.gov/assessment/ and select the link “Scoring Information” for any recentlyposted information regarding this examination. This site should be checked before the rating process for this examination begins and several times throughout the Regents Examination period.
Part A and Part B– Allow 1 credit for each correct response.
1..... 3..... 2..... 4..... 3..... 2..... 4..... 2..... 5..... 1..... 6..... 4..... 7..... 1..... 8..... 2.....
Part A
Part B–
Directions to the Teacher Follow the procedures below for scoring student answer papers for the Regents Examination in Physical Setting/Chemistry. Additional information about scoring is provided in the publication Information Booklet for Scoring Regents Examinations in the Sciences. Do not attempt to correct the student’s work by making insertions or changes of any kind. If the student’s responses for the multiple-choice questions are being hand scored prior to being scanned, the scorer must be careful not to make any marks on the answer sheet except to record the scores in the designated score boxes. Marks elsewhere on the answer sheet will interfere with the accuracy of the scanning. Allow 1 credit for each correct response. At least two science teachers must participate in the scoring of the Part B–2 and Part C open-ended questions on a student’s paper. Each of these teachers should be responsible for scoring a selected number of the open-ended questions on each answer paper. No one teacher is to score more than approximately one-half of the open-ended questions on a student’s answer paper. Teachers may not score their own students’ answer papers. Students’ responses must be scored strictly according to the Scoring Key and Rating Guide. For open- ended questions, credit may be allowed for responses other than those given in the rating guide if the response is a scientifically accurate answer to the question and demonstrates adequate knowledge, as indicated by the examples in the rating guide. On the student’s separate answer sheet, for each question, record the number of credits earned and the teacher’s assigned rater/scorer letter. Fractional credit is not allowed. Only whole-number credit may be given for a response. If the student gives more than one answer to a question, only the first answer should be rated. Units need not be given when the wording of the questions allows such omissions. For hand scoring, raters should enter the scores earned in the appropriate boxes printed on the separate answer sheet. Next, the rater should add these scores and enter the total in the box labeled “Total Raw Score.” Then the student’s raw score should be converted to a scale score by using the conversion chart that will be posted on the Department’s web site at: http://www.p12.nysed.gov/assessment/ on Wednesday, June 20, 2018. The student’s scale score should be entered in the box labeled “Scale Score” on the student’s answer sheet. The scale score is the student’s final examination score. Schools are not permitted to rescore any of the open-ended questions on this exam after each question has been rated once, regardless of the final exam score. Schools are required to ensure that the raw scores have been added correctly and that the resulting scale score has been determined accurately. Because scale scores corresponding to raw scores in the conversion chart may change from one administration to another, it is crucial that, for each administration, the conversion chart provided for that administration be used to determine the student’s final score.
57 [1] Allow 1 credit. Acceptable responses include, but are not limited to: (^10) n 0 n^1
58 [1] Allow 1 credit. Acceptable responses include, but are not limited to: e beta beta decay beta particle
59 [1] Allow 1 credit for 19.20 g. Significant figures do not need to be shown.
60 [1] Allow 1 credit for 5 min or five min.
61 [1] Allow 1 credit. Acceptable responses include, but are not limited to: The intermolecular forces are weaker at 180.°C than at 120.°C. The forces are stronger at 120°C. The IMF is stronger at the lower temperature. The liquid has stronger IMF than the gas.
62 [1] Allow 1 credit. Acceptable responses include, but are not limited to: Potential energy: decreases Average kinetic energy: no change Potential energy: There is a decrease. Average kinetic energy: It remains the same.
^01
^01
63 [1] Allow 1 credit for 0.500 mol or any value from 0.500 mol to 0.501 mol, inclusive.
64 [1] Allow 1 credit. Acceptable responses include, but are not limited to: Change in pressure: increases Change in temperature: higher Change in pressure: any pressure greater than 0.5 atm Change in temperature: any temperature above 298 K
65 [1] Allow 1 credit. Acceptable responses include, but are not limited to:
V (^ 24 5.^ (^298 L)(^265 K)(. 1 00K)(.^ 0 500at^ tmatm) atm L K
atm
V
K
70 [1] Allow 1 credit for alcohol or alcohols.
71 [1] Allow 1 credit. Acceptable responses include, but are not limited to: The rate of the forward reaction equals the rate of the reverse reaction. Both reactions occur at the same rate.
72 [1] Allow 1 credit. Acceptable responses include, but are not limited to: More H 2 (g) molecules collide with CO(g) molecules, producing more CH 3 OH(g). Adding H 2 increases the number of effective collisions to produce more methanol. A greater number of effective collisions occur.
73 [1] Allow 1 credit. Acceptable responses include, but are not limited to: Rate of forward reaction: decreases/slower Rate of reverse reaction: decreases/slower
74 [1] Allow 1 credit for C 18 H 32 O 2. The order of the elements may vary.
75 [1] Allow 1 credit. Acceptable responses include, but are not limited to: covalent polar covalent polar covalent bond sigma bond
76 [1] Allow 1 credit. Examples of 1-credit reponses:
H
H C
H C C H H
H
H
C C
H
H
C
H
H
C
H C
H C
H
H
C
H H H C C H
H
H
C C
H
H
C
H
H
H
H
C C
H
H
C
H
H
O O H
H
H C
H C C H H
H
H
C C
H
H
C
H
H
C
H C
H C
H
H
C
H H H C C H
H
H
C C
H
H
C
H
H
H
H
C C
H
H
C
H
H
O O H
77 [1] Allow 1 credit for ______ H 2 (g) ______ O 2 (g) → ______ H 2 O(g) energy. Allow credit even if the coefficient “1” is written in front of O 2 (g).
78 [1] Allow 1 credit. Acceptable responses include, but are not limited to: From 0 to 2 From 0 to 2 From zero to negative 2
79 [1] Allow 1 credit for 5.0 mol or 5 mol.
80 [1] Allow 1 credit for 2 or two.
81 [1] Allow 1 credit. Acceptable responses include, but are not limited to: 1.0 10 ^4 M 0.0001 M
82 [1] Allow 1 credit for 30. mL or 30 mL.
83 [1] Allow 1 credit. Acceptable responses include, but are not limited to: As the seawater becomes more acidic, the solubility of CaCO 3 increases. As the pH of the seawater decreases, the solubility of calcium carbonate increases. solubility increases more soluble
84 [1] Allow 1 credit for blue.
85 [1] Allow 1 credit for 6 or six.
Map to Core Curriculum
June 2018 Physical Setting/Chemistry
Question Numbers Key Ideas/Performance Indicators Part A Part B Part C Standard 1 Math Key Idea 1 55, 65 69, 80 Math Key Idea 2 (^) 60, 61 77, 81, 83 Math Key Idea 3 33, 34, 36, 37, 41, 42,44, 46, 47, 57, 59, 60, 63 67, 74, 78, 82, 85 Science Inquiry Key Idea 1 32, 39, 45, 48, 50, 51, 52, 54, 56, 58, 61, 62, 64
66, 68, 70, 71, 73, 75, 76, 79, 80, 83, 84 Science Inquiry Key Idea 2 Science Inquiry Key Idea 3 31, 33, 34, 35, 38, 40, 43, 44, 45, 46, 47, 48,49, 50, 56, 60, 61
66, 67, 68, 74, 76, 77, 78 Engineering Design Key Idea 1 Key Idea 1^ Standard 2 Key Idea 2 Key Idea 3 Key Idea 1^ Standard 6 Key Idea 2 65 69, 74 Key Idea 3 81, 85 Key Idea 4 72 Key Idea 5 62 Key Idea 1^ Standard 7 Key Idea 2 Standard 4 Process Skills Key Idea 3 31, 35, 36, 37, 38, 40,42, 45, 47, 49, 51, 53, 54, 63, 64, 65
70, 71, 72, 73, 77,81, 82, 83, 84
Key Idea 4 44, 57, 59, 62 Key idea 5 Standard 4 Key Idea 3 1, 2, 3, 4, 5, 6, 7,9, 10, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,27, 28
31, 32, 33, 34, 35, 36,37, 38, 39, 40, 42, 43, 45, 46, 47, 48, 49, 50, 51, 53, 55, 56, 63, 64, 65
66, 67, 68, 69, 70,71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85 Key Idea 4 30 44, 57, 58, 59, 60, 62
Key Idea 5 8, 11, 13, 14, 29 41, 52, 54, 61 75 Reference Tables 2011 Edition 4, 6, 7, 9, 11, 13,18, 21, 25, 26, 28, 30
33, 34, 35, 36, 41, 42,44, 46, 47, 49, 51, 53, 54, 55, 56, 57, 58, 59, 65
67, 68, 69, 70, 75,76, 78, 82, 84
