Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 384 · 40 questions

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

1. 1.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) orange juice (d) salt water
2. 2.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) salt water (d) vinegar
3. 3.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) lemon juice (d) sugar water
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the colour we see
5. 5.True or false: detergent water is a base. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
8. 8.True or false: yeast is not needed for the turmeric test. (a) False (b) True
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a mirror (d) white paper strips
13. 13.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) lemon juice (d) plain water
14. 14.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
15. 15.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
16. 16.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
17. 17.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a comb (d) a dropper or spoon
18. 18.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a battery cell (d) lemon juice
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
20. 20.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) salt water (d) detergent water
21. 21.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) water
23. 23.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) curd (d) salt water
24. 24.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a magnet (d) a dropper or spoon
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) salt water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
30. 30.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
31. 31.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a battery cell (d) soap solution
33. 33.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) soap solution (d) turmeric powder
36. 36.True or false: soap solution is neutral. (a) False (b) True
37. 37.True or false: a magnet is needed for the turmeric test. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
39. 39.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) water (d) a comb

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