Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 598 · 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.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
2. 2.True or false: orange juice is a base. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
5. 5.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is an acid (d) soap is hot
6. 6.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a battery cell (d) a dropper or spoon
7. 7.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) curd (d) detergent water
8. 8.⚖️ 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 colour we see (d) the liquid we test
9. 9.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
10. 10.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
11. 11.True or false: a mirror is needed for the turmeric test. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) lemon juice (d) turmeric powder
15. 15.⚖️ 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
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
19. 19.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
20. 20.True or false: curd is an acid. (a) True (b) False
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) white paper strips (d) a balloon
22. 22.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) lemon juice (d) a battery cell
23. 23.🛟 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
24. 24.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a pulley (d) a magnet
25. 25.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) baking soda water (d) lemon juice
26. 26.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
27. 27.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) water (d) lemon juice
29. 29.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
31. 31.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
34. 34.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
35. 35.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) orange juice (d) plain water
38. 38.🧺 Which of these is needed for the turmeric test? (a) a comb (b) water (c) a mirror (d) a balloon
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) soap solution (d) turmeric powder
40. 40.⚖️ 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

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