Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 750 · 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.⚖️ 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
2. 2.🛟 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
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) lemon juice (d) water
4. 4.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
5. 5.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) yeast (d) white paper strips
8. 8.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
9. 9.🫧 Which of these is an acid? (a) curd (b) baking soda water (c) detergent water (d) sugar water
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) lemon juice (d) plain water
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) baking soda water (d) tamarind water
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
13. 13.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) a comb
15. 15.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
16. 16.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
17. 17.True or false: a comb is not needed for the turmeric test. (a) True (b) False
18. 18.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) detergent water (d) vinegar
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) yeast (c) a dropper or spoon (d) soap solution
22. 22.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) salt water (b) plain water (c) lemon juice (d) detergent water
24. 24.True or false: salt water keeps turmeric yellow. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the light we look in
27. 27.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) white paper strips (d) water
30. 30.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
32. 32.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
33. 33.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
34. 34.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
35. 35.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) lemon juice (d) turmeric powder
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
37. 37.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
39. 39.True or false: tamarind water is an acid. (a) False (b) True
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white

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