Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 186 · 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.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
2. 2.⚖️ 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
3. 3.🫧 Which of these is neutral? (a) vinegar (b) orange juice (c) salt water (d) curd
4. 4.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) lemon juice (c) white paper strips (d) water
6. 6.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
7. 7.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) turmeric powder (c) white paper strips (d) lemon juice
8. 8.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
9. 9.🫧 Which of these is neutral? (a) orange juice (b) curd (c) detergent water (d) plain water
10. 10.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
11. 11.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) turmeric powder (d) yeast
12. 12.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
13. 13.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) baking soda water (d) lemon juice
14. 14.True or false: a balloon is needed for the turmeric test. (a) False (b) True
15. 15.True or false: yeast is needed for the turmeric test. (a) False (b) True
16. 16.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
17. 17.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
20. 20.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
21. 21.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
22. 22.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a balloon (d) turmeric powder
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue
26. 26.🔮 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
27. 27.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
30. 30.True or false: vinegar keeps turmeric yellow. (a) False (b) True
31. 31.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a mirror (d) a dropper or spoon
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) plain water (d) vinegar
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
37. 37.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) a magnet (d) a balloon
38. 38.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
40. 40.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) plain water (d) sugar water

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