Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 826 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
2. 2.🫧 Which of these is neutral? (a) plain water (b) soap solution (c) lemon juice (d) orange juice
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) bright blue (d) reddish
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
11. 11.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) water (d) a dropper or spoon
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) plain water (d) soap solution
14. 14.🔮 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
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
16. 16.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.True or false: vinegar turns turmeric reddish-brown. (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 colour we see (b) the turmeric paper (c) the liquid we test (d) the light we look in
20. 20.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) sugar water (d) detergent water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) water (d) soap solution
23. 23.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
24. 24.True or false: salt water is an acid. (a) True (b) False
25. 25.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a mirror (d) soap solution
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) a balloon
27. 27.True or false: yeast is not needed for the turmeric test. (a) True (b) False
28. 28.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
29. 29.True or false: soap solution is needed for the turmeric test. (a) False (b) True
30. 30.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
32. 32.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
33. 33.True or false: vinegar is a base. (a) False (b) True
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
35. 35.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.True or false: a mirror is needed for the turmeric test. (a) True (b) False
37. 37.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
38. 38.True or false: soap solution is an acid. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) tamarind water (d) detergent water
40. 40.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) water (d) soap solution

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