Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 642 · 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.⚖️ 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
2. 2.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a battery cell (d) a dropper or spoon
3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
4. 4.True or false: soap solution is needed for the turmeric test. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
6. 6.True or false: a balloon is needed for the turmeric test. (a) True (b) False
7. 7.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a balloon (c) a magnet (d) a battery cell
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
9. 9.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) water (d) a magnet
10. 10.⚖️ 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
11. 11.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) tamarind water (d) sugar water
13. 13.⚖️ 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
14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
15. 15.🛟 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
16. 16.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) turmeric powder (d) a magnet
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) white paper strips (d) soap solution
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
21. 21.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
22. 22.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
23. 23.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
24. 24.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
25. 25.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
26. 26.⚖️ 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
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
28. 28.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
30. 30.True or false: curd is a base. (a) False (b) True
31. 31.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
33. 33.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) a dropper or spoon (d) water
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) lemon juice (d) turmeric powder
36. 36.📘 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
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) yeast
38. 38.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
39. 39.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
40. 40.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral

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