Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 431 · 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 is an acid? (a) plain water (b) salt water (c) detergent water (d) lemon juice
2. 2.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
3. 3.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) lemon juice (d) baking soda water
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) lemon juice (d) plain water
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
9. 9.🛟 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
10. 10.True or false: plain water is a base. (a) True (b) False
11. 11.🫧 Which of these is a base? (a) salt water (b) sugar water (c) plain water (d) detergent water
12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) a dropper or spoon (d) a comb
13. 13.⚖️ 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 light we look in (c) the turmeric paper (d) the colour we see
14. 14.True or false: baking soda water is an acid. (a) False (b) True
15. 15.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a battery cell (d) a balloon
16. 16.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) a magnet (d) lemon juice
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
22. 22.⚖️ 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
23. 23.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a mirror (d) water
25. 25.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) turmeric powder (d) water
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
28. 28.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a mirror (d) lemon juice
29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
30. 30.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) soap solution (d) tamarind water
32. 32.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
33. 33.⚖️ 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
34. 34.🛟 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
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a battery cell (d) water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
38. 38.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) lemon juice (d) tamarind water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False

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