Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 416 · 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 is neutral? (a) baking soda water (b) plain water (c) vinegar (d) lemon juice
2. 2.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
5. 5.⚖️ 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 liquid we test (c) the light we look in (d) the turmeric paper
6. 6.True or false: a comb is needed for the turmeric test. (a) True (b) False
7. 7.⚖️ 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
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the light we look in (d) the colour we see
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) water
12. 12.True or false: soap solution keeps turmeric yellow. (a) True (b) False
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
14. 14.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
16. 16.🫧 Which of these is a base? (a) curd (b) tamarind water (c) baking soda water (d) vinegar
17. 17.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
18. 18.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
19. 19.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
20. 20.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) soap solution (d) tamarind water
21. 21.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
22. 22.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) orange juice (d) detergent water
23. 23.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
24. 24.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) sugar water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
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? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.⚖️ 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
29. 29.🍋 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
30. 30.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) a dropper or spoon (d) soap solution
33. 33.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a comb (d) yeast
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
36. 36.True or false: sugar water is neutral. (a) False (b) True
37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
38. 38.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.True or false: baking soda water is a base. (a) True (b) False
40. 40.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) water (d) soap solution

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