Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 449 · 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: baking soda water is a base. (a) False (b) True
2. 2.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a balloon (d) white paper strips
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the number of drops
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
8. 8.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) detergent water (d) soap solution
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.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) tamarind water (d) curd
11. 11.🛟 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
12. 12.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.True or false: sugar water is a base. (a) False (b) True
14. 14.🔮 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
15. 15.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
17. 17.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a battery cell (d) soap solution
19. 19.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
23. 23.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a comb (d) turmeric powder
25. 25.🫧 Which of these is an acid? (a) lemon juice (b) salt water (c) plain water (d) detergent water
26. 26.True or false: water is needed for the turmeric test. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a mirror (d) turmeric powder
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice
31. 31.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
32. 32.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a balloon
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🍋 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
37. 37.🫧 Which of these is an acid? (a) curd (b) sugar water (c) baking soda water (d) soap solution
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True

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