Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 352 · 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: yeast is needed for the turmeric test. (a) False (b) True
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
3. 3.⚖️ 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
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
7. 7.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
10. 10.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
11. 11.🫧 Which of these is an acid? (a) curd (b) detergent water (c) baking soda water (d) soap solution
12. 12.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) lemon juice (d) plain water
13. 13.True or false: plain water is an acid. (a) True (b) False
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
15. 15.⚖️ 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
16. 16.True or false: salt water is an acid. (a) False (b) True
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) soap solution (d) tamarind water
18. 18.🍋 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
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) lemon juice (d) white paper strips
20. 20.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) white paper strips (d) a balloon
21. 21.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) vinegar (d) salt water
22. 22.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
23. 23.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
25. 25.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
26. 26.🍋 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 disappears (d) it turns blue
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) tamarind water (c) sugar water (d) detergent water
28. 28.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
29. 29.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
33. 33.True or false: tamarind water is an acid. (a) False (b) True
34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
35. 35.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a comb (c) white paper strips (d) a dropper or spoon
36. 36.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) plain water (d) sugar water
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) white paper strips (d) a magnet
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
40. 40.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True

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