Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 286 · 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) white paper strips (b) a dropper or spoon (c) lemon juice (d) a balloon
2. 2.⚖️ 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 liquid we test (d) the colour we see
3. 3.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) soap solution (d) orange juice
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) a dropper or spoon (d) water
7. 7.🫧 Which of these is neutral? (a) curd (b) soap solution (c) salt water (d) detergent water
8. 8.True or false: salt water is a base. (a) False (b) True
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a magnet (d) white paper strips
12. 12.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
13. 13.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
15. 15.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) soap solution (d) white paper strips
17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
18. 18.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) vinegar (d) tamarind water
19. 19.True or false: lemon juice is an acid. (a) False (b) True
20. 20.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) lemon juice (d) plain water
21. 21.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
22. 22.True or false: curd is neutral. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) sugar water (d) detergent water
25. 25.⚖️ 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
26. 26.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
27. 27.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
28. 28.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
30. 30.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
31. 31.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) yeast (d) a comb
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
33. 33.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) water (d) a magnet
34. 34.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
35. 35.True or false: yeast is needed for the turmeric test. (a) True (b) False
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
37. 37.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🧺 Do we need lemon juice 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.🍋 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

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