Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 802 · 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.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it disappears (d) it turns blue
2. 2.True or false: detergent water is neutral. (a) True (b) False
3. 3.True or false: salt water keeps turmeric yellow. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) tamarind water (d) plain water
5. 5.🛟 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
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
7. 7.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
9. 9.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) yeast (c) a battery cell (d) a comb
10. 10.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
13. 13.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
14. 14.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
17. 17.True or false: sugar water keeps turmeric yellow. (a) True (b) False
18. 18.True or false: lemon juice is an acid. (a) True (b) False
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
20. 20.⚖️ 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) vinegar (d) plain water
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: water is needed for the turmeric test. (a) True (b) False
25. 25.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
26. 26.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
28. 28.🫧 Which of these is a base? (a) sugar water (b) plain water (c) soap solution (d) curd
29. 29.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) white paper strips (c) water (d) a dropper or spoon
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the number of drops
31. 31.🫧 Which of these is an acid? (a) vinegar (b) salt water (c) detergent water (d) sugar water
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
33. 33.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a balloon (d) white paper strips
34. 34.🫧 Which of these is an acid? (a) detergent water (b) orange juice (c) plain water (d) sugar water
35. 35.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
36. 36.True or false: a comb is not needed for the turmeric test. (a) True (b) False
37. 37.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) white paper strips (d) soap solution
39. 39.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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