Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 216 · 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.⚖️ 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
2. 2.True or false: a magnet is needed for the turmeric test. (a) True (b) False
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) detergent water (d) sugar water
4. 4.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
5. 5.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
6. 6.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
7. 7.True or false: plain water keeps turmeric yellow. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
9. 9.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) baking soda water (d) plain water
12. 12.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🫧 Which of these is an acid? (a) plain water (b) salt water (c) orange juice (d) detergent water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
15. 15.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
17. 17.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) water (d) a battery cell
18. 18.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) turmeric powder (d) a magnet
20. 20.⚖️ 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
22. 22.True or false: a balloon is needed for the turmeric test. (a) False (b) True
23. 23.True or false: baking soda water is neutral. (a) False (b) True
24. 24.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) yeast (d) soap solution
26. 26.True or false: tamarind water is an acid. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) lemon juice (d) baking soda water
28. 28.True or false: baking soda water is a base. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
30. 30.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
32. 32.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a comb (d) turmeric powder
34. 34.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a battery cell (d) soap solution
37. 37.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
38. 38.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
39. 39.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
40. 40.🫧 Which of these is a base? (a) plain water (b) soap solution (c) orange juice (d) vinegar

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