Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 631 · 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 needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a comb (d) a magnet
2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
4. 4.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
6. 6.⚖️ 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
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
9. 9.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
11. 11.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
13. 13.True or false: yeast is needed for the turmeric test. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
15. 15.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
16. 16.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
17. 17.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
18. 18.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) a mirror (d) a dropper or spoon
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) vinegar (d) plain water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the light we look in
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) white paper strips (d) turmeric powder
23. 23.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
24. 24.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
26. 26.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) a magnet (d) a mirror
27. 27.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) tamarind water (d) soap solution
28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
29. 29.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
31. 31.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
32. 32.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
33. 33.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
34. 34.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) a dropper or spoon (d) soap solution
36. 36.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) plain water (d) lemon juice
38. 38.⚖️ 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
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
40. 40.True or false: tamarind water is an acid. (a) True (b) False

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