Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 654 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a comb
2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
3. 3.⚖️ 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 turmeric paper (c) the liquid we test (d) the light we look in
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a battery cell (d) white paper strips
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
8. 8.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) white paper strips
9. 9.True or false: soap solution is needed for the turmeric test. (a) False (b) True
10. 10.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
12. 12.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
14. 14.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) curd (d) vinegar
15. 15.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) vinegar (d) sugar water
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
18. 18.True or false: water is not needed for the turmeric test. (a) True (b) False
19. 19.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
20. 20.True or false: yeast is needed for the turmeric test. (a) False (b) True
21. 21.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) soap solution (d) a mirror
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
25. 25.⚖️ 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 change it (c) we measure it
26. 26.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the light we look in (d) the turmeric paper
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) tamarind water (d) vinegar
30. 30.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a balloon (d) soap solution
33. 33.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
34. 34.True or false: lemon juice is a base. (a) True (b) False
35. 35.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
37. 37.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
38. 38.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
39. 39.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
40. 40.⚖️ 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

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