Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 86 · 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.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the number of drops (d) the colour we see
3. 3.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) tamarind water (d) detergent water
5. 5.🫧 Which of these is neutral? (a) orange juice (b) detergent water (c) lemon juice (d) plain water
6. 6.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a balloon
8. 8.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) salt water (d) soap solution
10. 10.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
14. 14.True or false: plain water is neutral. (a) False (b) True
15. 15.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
16. 16.⚖️ 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
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
20. 20.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
21. 21.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
23. 23.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) water (d) a magnet
24. 24.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
25. 25.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a magnet (d) turmeric powder
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the number of drops
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) detergent water (d) salt water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) soap solution (d) lemon juice
30. 30.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a balloon (d) turmeric powder
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
34. 34.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
35. 35.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) plain water (d) baking soda water
36. 36.True or false: salt water keeps turmeric yellow. (a) False (b) True
37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.⚖️ 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
39. 39.True or false: detergent water is a base. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see

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