Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 758 · 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 turns turmeric reddish-brown? (a) soap solution (b) lemon juice (c) vinegar (d) salt water
2. 2.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
3. 3.True or false: curd is an acid. (a) False (b) True
4. 4.True or false: vinegar is neutral. (a) False (b) True
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
6. 6.True or false: a mirror is needed for the turmeric test. (a) True (b) False
7. 7.🫧 Which of these is a base? (a) tamarind water (b) plain water (c) baking soda water (d) salt water
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) white paper strips (d) yeast
9. 9.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) water (d) a battery cell
11. 11.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
12. 12.🍋 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 turns blue (d) it disappears
13. 13.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
14. 14.True or false: baking soda water is a base. (a) True (b) False
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) vinegar (d) baking soda water
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
20. 20.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) white at once (d) bright blue
24. 24.🔮 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
25. 25.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) a balloon
27. 27.⚖️ 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 change it (c) we measure it
28. 28.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) lemon juice (d) detergent water
30. 30.True or false: water is needed for the turmeric test. (a) True (b) False
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) white paper strips (d) lemon juice
32. 32.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
33. 33.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) lemon juice (d) vinegar
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.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.True or false: salt water is neutral. (a) True (b) False
39. 39.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.⚖️ 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 number of drops

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