Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 463 · 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 turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
2. 2.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
3. 3.True or false: detergent water keeps turmeric yellow. (a) True (b) False
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) turmeric powder (d) water
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) turmeric powder (d) a dropper or spoon
6. 6.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
8. 8.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
9. 9.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) soap solution (d) detergent water
10. 10.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
11. 11.🫧 Which of these is neutral? (a) sugar water (b) orange juice (c) curd (d) lemon juice
12. 12.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
13. 13.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
14. 14.⚖️ 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
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
16. 16.True or false: tamarind water is a base. (a) False (b) True
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) plain water (d) soap solution
18. 18.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
21. 21.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
24. 24.🫧 Which of these is a base? (a) curd (b) tamarind water (c) detergent water (d) sugar water
25. 25.True or false: a mirror is needed for the turmeric test. (a) True (b) False
26. 26.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
29. 29.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
30. 30.🫧 Which of these is an acid? (a) plain water (b) salt water (c) tamarind water (d) soap solution
31. 31.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
33. 33.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
35. 35.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
36. 36.⚖️ 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 colour we see (c) the light we look in (d) the liquid we test
37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
38. 38.True or false: baking soda water is a base. (a) True (b) False
39. 39.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True

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