Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 447 · 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 an acid? (a) soap solution (b) salt water (c) baking soda water (d) lemon juice
2. 2.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) soap solution (d) a balloon
4. 4.True or false: detergent water keeps turmeric yellow. (a) True (b) False
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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) turmeric powder (d) water
7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) baking soda water (d) salt water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
10. 10.⚖️ 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
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
12. 12.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.True or false: tamarind water is an acid. (a) False (b) True
14. 14.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) yeast
17. 17.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
18. 18.🫧 Which of these is a base? (a) sugar water (b) lemon juice (c) orange juice (d) detergent water
19. 19.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) soap solution (d) white paper strips
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
22. 22.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) turmeric powder (d) a magnet
23. 23.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
24. 24.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
25. 25.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) sugar water (d) tamarind water
27. 27.True or false: water is not needed for the turmeric test. (a) False (b) True
28. 28.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
30. 30.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) a dropper or spoon
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) soap solution (d) sugar water
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
36. 36.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
37. 37.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False

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