Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 709 · 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 keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
2. 2.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
4. 4.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
5. 5.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) curd (d) soap solution
6. 6.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) plain water (d) lemon juice
7. 7.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
8. 8.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
9. 9.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) water (d) a mirror
11. 11.True or false: soap solution is needed for the turmeric test. (a) False (b) True
12. 12.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a mirror (d) soap solution
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a battery cell (d) white paper strips
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a balloon (d) white paper strips
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
18. 18.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a magnet (d) a mirror
19. 19.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) water (d) white paper strips
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
23. 23.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
24. 24.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
25. 25.True or false: soap solution is an acid. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
27. 27.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) vinegar (d) detergent water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
30. 30.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) soap solution (d) lemon juice
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
32. 32.True or false: plain water is neutral. (a) False (b) True
33. 33.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
34. 34.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) a battery cell (d) a comb
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) lemon juice (d) vinegar
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
38. 38.True or false: vinegar keeps turmeric yellow. (a) True (b) False
39. 39.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) baking soda water (d) salt water
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) salt water (d) soap solution

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