Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 199 · 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 is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) a magnet (d) a mirror
2. 2.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
6. 6.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) baking soda water (d) orange juice
7. 7.True or false: plain water is neutral. (a) True (b) False
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) a magnet
9. 9.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
11. 11.🫧 Which of these is an acid? (a) plain water (b) lemon juice (c) soap solution (d) baking soda water
12. 12.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
13. 13.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
14. 14.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) a dropper or spoon (d) water
15. 15.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
16. 16.🫧 Which of these is a base? (a) detergent water (b) vinegar (c) tamarind water (d) orange juice
17. 17.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) plain water (d) baking soda water
18. 18.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) soap solution (d) yeast
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the number of drops (d) the turmeric paper
20. 20.🫧 Which of these is neutral? (a) curd (b) sugar water (c) detergent water (d) lemon juice
21. 21.⚖️ 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
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
23. 23.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) white paper strips (d) a battery cell
26. 26.True or false: a mirror is needed for the turmeric test. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
28. 28.🛟 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
29. 29.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🔍 Which is the odd one out? (a) plain water (b) salt water (c) baking soda water (d) lemon juice
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
32. 32.True or false: soap solution is a base. (a) True (b) False
33. 33.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) tamarind water (d) salt water
34. 34.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
35. 35.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) water (d) a dropper or spoon
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False

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