Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 653 · 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 rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
6. 6.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) lemon juice (d) yeast
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
10. 10.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
12. 12.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) plain water (d) baking soda water
17. 17.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) yeast (d) a magnet
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a balloon (d) a dropper or spoon
20. 20.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) plain water (d) soap solution
21. 21.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.True or false: lemon juice is an acid. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
24. 24.⚖️ 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 turmeric paper
25. 25.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) white paper strips (d) water
27. 27.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
28. 28.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) lemon juice (d) a dropper or spoon
29. 29.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) baking soda water (d) soap solution
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
31. 31.🛟 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
32. 32.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
33. 33.True or false: soap solution keeps turmeric yellow. (a) False (b) True
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
35. 35.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a battery cell (d) white paper strips
36. 36.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
37. 37.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
38. 38.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
39. 39.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
40. 40.True or false: a magnet is needed for the turmeric test. (a) False (b) True

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