Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 207 · 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? True or false: the colour we see is what we measure. (a) False (b) True
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) turmeric powder (d) white paper strips
3. 3.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
5. 5.True or false: salt water keeps turmeric yellow. (a) True (b) False
6. 6.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.True or false: yeast is not needed for the turmeric test. (a) True (b) False
8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
9. 9.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the light we look in (d) the colour we see
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) lemon juice (d) soap solution
13. 13.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) soap solution (d) plain water
14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a magnet (d) a balloon
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
16. 16.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
17. 17.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) a balloon (d) yeast
19. 19.⚖️ 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
20. 20.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a mirror (d) a balloon
22. 22.⚖️ 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
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) lemon juice (d) water
25. 25.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) salt water (d) lemon juice
27. 27.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) soap solution (d) a balloon
29. 29.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a magnet (d) lemon juice
32. 32.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a mirror (d) water
34. 34.True or false: vinegar is a base. (a) True (b) False
35. 35.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) tamarind water (d) baking soda water
36. 36.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
37. 37.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
38. 38.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
39. 39.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
40. 40.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a magnet (d) white paper strips

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