Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 574 · 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 keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
2. 2.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
4. 4.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
5. 5.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.True or false: sugar water is a base. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) soap solution (d) water
10. 10.🟡 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
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) soap solution (d) lemon juice
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
15. 15.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
17. 17.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.⚖️ 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
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
20. 20.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) turmeric powder (d) a balloon
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) turmeric powder (d) a dropper or spoon
23. 23.True or false: tamarind water is a base. (a) True (b) False
24. 24.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) baking soda water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
27. 27.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
28. 28.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
29. 29.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a magnet (d) water
30. 30.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a mirror
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
32. 32.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
33. 33.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
34. 34.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) detergent water (d) tamarind water
36. 36.🫧 Which of these is neutral? (a) soap solution (b) baking soda water (c) lemon juice (d) sugar water
37. 37.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
38. 38.True or false: salt water is a base. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
40. 40.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) soap solution (d) a balloon

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