Maximum Score:  12 Points

Question 5 Litmus paper data table 1

4 points total

	Indicator	Solution A	Solution B	Solution C
Row 1	Blue Litmus	blue or same or no change	red or pink	blue or same or no change
Row 2	Red Litmus	red or same or no change	red or same or no change	blue or purple

Point Criteria:

• Blue Litmus

  - Allow 1 point if both Solutions A and C are correct.

  - Allow 1 point if Solution B is correct.

• Red Litmus

  Allow 1 point if both Solutions A and B are correct.

  Allow 1 point if Solution C is correct.

Question 7. Phenolphtahlein data table.

2 points total

	Indicator	Solution A	Solution B	Solution C
Row 3	Phenolphthalein	clear or same or no change	clear or same or no change	pink

Point Criteria:

• Phenolphthalein

  - Allow 1 point if both Solutions A and C are correct.

  - Allow 1 point if Solution C is correct.

Question 9. Identify acidic solution and explain your answer.	3 points total
Point Criteria:

• Allow 1 point for identifying the acidic solution as solution B

  - Accept any student's response correctly based on his/her data

  - Multiple answers receive no credit

• Allow 2 points for an explanation relating student data to background information.

  - Solution B turned blue litmus red which indicates an acid.

  - Allow only 1 point if the student states the background information without relating it to his/her data.

Question 10. Identify basic solution and explain your answer.	3 points total
Point Criteria:

• Allow 1 point for identifying the basic solution as solution C.

  - Accept any student's response correctly based on his/her data

  - Multiple answers receive no credit

• Allow 2 points for an explanation relating student data to background information.

  Solution C turned red litmus blue and/or phenolphthalein pink which indicates a base.

  Allow only 1 point if the student states the background information without relating it to his/her data.

Student ID _______________________________	Scoring Form - Acid & Base Testing 1
Male or Female (circle one)

Circle the student's score for each question. Add the points for each question and write the total score at the bottom of the scoring form.

	Total Score _______________________________
	Total possible score - 12 points