Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 221 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
2. 2.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
3. 3.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
4. 4.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the liquid we test
6. 6.🫧 Which of these is an acid? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
7. 7.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) turmeric powder (d) a dropper or spoon
9. 9.True or false: baking soda water is a base. (a) False (b) True
10. 10.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
11. 11.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
12. 12.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
15. 15.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap is magnetic (d) soap water is a base
18. 18.True or false: salt water is an acid. (a) False (b) True
19. 19.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) tamarind water (d) baking soda water
20. 20.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
21. 21.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a comb (d) lemon juice
22. 22.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: a mirror is needed for the turmeric test. (a) False (b) True
25. 25.True or false: salt water keeps turmeric yellow. (a) True (b) False
26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
27. 27.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
29. 29.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) soap solution (d) tamarind water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
31. 31.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) a balloon (d) a comb
32. 32.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
33. 33.🫧 Which of these is an acid? (a) lemon juice (b) plain water (c) soap solution (d) salt water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) water (d) turmeric powder
36. 36.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a comb (d) a mirror
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) white paper strips (d) turmeric powder
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
40. 40.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) salt water (d) sugar water

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