Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 962 · 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.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
2. 2.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) lemon juice (d) sugar water
3. 3.True or false: salt water is an acid. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
5. 5.True or false: water is needed for the turmeric test. (a) True (b) False
6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) soap solution (d) turmeric powder
8. 8.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
9. 9.True or false: curd is a base. (a) True (b) False
10. 10.⚖️ 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 light we look in
11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) yeast (d) a magnet
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
13. 13.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) yeast (c) a battery cell (d) a comb
14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) vinegar (d) sugar water
18. 18.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
19. 19.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) lemon juice (c) sugar water (d) plain water
23. 23.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
25. 25.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) yeast (d) water
27. 27.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
29. 29.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
30. 30.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
31. 31.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) soap solution (d) turmeric powder
32. 32.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
33. 33.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
35. 35.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
36. 36.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) water (d) turmeric powder
38. 38.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False

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