Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 517 · 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.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
2. 2.🫧 Which of these is an acid? (a) baking soda water (b) tamarind water (c) detergent water (d) sugar water
3. 3.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
4. 4.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
5. 5.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
7. 7.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) water (d) a magnet
13. 13.True or false: plain water is neutral. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
16. 16.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) tamarind water (d) sugar water
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
18. 18.True or false: baking soda water is a base. (a) False (b) True
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a comb
20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
24. 24.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
26. 26.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) yeast (d) a dropper or spoon
27. 27.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.True or false: curd is a base. (a) False (b) True
30. 30.🫧 Which of these is an acid? (a) orange juice (b) soap solution (c) plain water (d) detergent water
31. 31.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) water (c) lemon juice (d) white paper strips
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) soap solution (d) a balloon
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a mirror (d) soap solution
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
35. 35.True or false: soap solution keeps turmeric yellow. (a) True (b) False
36. 36.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
37. 37.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) baking soda water (d) vinegar
39. 39.True or false: sugar water is a base. (a) True (b) False
40. 40.True or false: soap solution is neutral. (a) True (b) False

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