Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 879 · 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: detergent water keeps turmeric yellow. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) a dropper or spoon (d) soap solution
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) detergent water (d) salt water
7. 7.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
8. 8.🫧 Which of these is neutral? (a) salt water (b) tamarind water (c) lemon juice (d) orange juice
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
10. 10.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a magnet (d) white paper strips
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) lemon juice (d) a mirror
15. 15.⚖️ 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
16. 16.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
17. 17.True or false: a comb is not needed for the turmeric test. (a) False (b) True
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
20. 20.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.⚖️ 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
22. 22.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
23. 23.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
24. 24.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a battery cell (d) soap solution
25. 25.True or false: tamarind water is a base. (a) True (b) False
26. 26.True or false: detergent water is neutral. (a) True (b) False
27. 27.True or false: a mirror is needed for the turmeric test. (a) True (b) False
28. 28.True or false: soap solution is an acid. (a) True (b) False
29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
30. 30.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
31. 31.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
32. 32.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
34. 34.True or false: a comb is needed for the turmeric test. (a) False (b) True
35. 35.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
38. 38.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) soap solution (d) a dropper or spoon
40. 40.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False

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