Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 603 · 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 turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) salt water (d) soap solution
2. 2.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
3. 3.True or false: sugar water is a base. (a) False (b) True
4. 4.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) salt water (d) plain water
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
8. 8.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
11. 11.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) vinegar (d) curd
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
13. 13.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
15. 15.🫧 Which of these is an acid? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
16. 16.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
21. 21.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) lemon juice
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
26. 26.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the light we look in
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a comb (c) turmeric powder (d) water
30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
31. 31.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
32. 32.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) white paper strips (d) a magnet
33. 33.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
34. 34.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
35. 35.🫧 Which of these is neutral? (a) soap solution (b) detergent water (c) sugar water (d) tamarind water
36. 36.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.True or false: lemon juice is a base. (a) False (b) True
39. 39.🫧 Which of these is an acid? (a) baking soda water (b) orange juice (c) salt water (d) sugar water
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) a dropper or spoon (d) turmeric powder

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