Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 501 · 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.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
2. 2.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
4. 4.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
5. 5.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) tamarind water (d) curd
6. 6.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
7. 7.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
8. 8.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) lemon juice (d) turmeric powder
9. 9.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) white paper strips (d) a balloon
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
11. 11.True or false: tamarind water is a base. (a) True (b) False
12. 12.🛟 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
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) a balloon
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) turmeric powder (d) soap solution
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
18. 18.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) vinegar (c) salt water (d) lemon juice
20. 20.⚖️ 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
21. 21.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
23. 23.True or false: soap solution is neutral. (a) False (b) True
24. 24.True or false: yeast is needed for the turmeric test. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
28. 28.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
32. 32.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
35. 35.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a balloon (d) yeast
36. 36.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) sugar water (d) tamarind water
38. 38.🫧 Which of these is neutral? (a) vinegar (b) baking soda water (c) curd (d) sugar water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
40. 40.True or false: plain water turns turmeric reddish-brown. (a) False (b) True

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