Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 63 · 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.True or false: orange juice is neutral. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a battery cell (d) lemon juice
4. 4.True or false: soap solution is needed for the turmeric test. (a) False (b) True
5. 5.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
6. 6.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a mirror (d) turmeric powder
11. 11.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) salt water (d) plain water
12. 12.🫧 Which of these is neutral? (a) vinegar (b) lemon juice (c) tamarind water (d) salt water
13. 13.⚖️ 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
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
15. 15.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
16. 16.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
18. 18.True or false: tamarind water is a base. (a) False (b) True
19. 19.True or false: yeast is needed for the turmeric test. (a) False (b) True
20. 20.True or false: water is needed for the turmeric test. (a) False (b) True
21. 21.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
23. 23.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns yellow again (d) it turns blue
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
25. 25.🫧 Which of these is a base? (a) vinegar (b) salt water (c) soap solution (d) tamarind water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
30. 30.True or false: lemon juice is a base. (a) True (b) False
31. 31.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.⚖️ 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
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) soap solution (d) white paper strips
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) vinegar (d) detergent water

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