Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 191 · 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 is needed for the turmeric test? (a) a magnet (b) a mirror (c) a dropper or spoon (d) a battery cell
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
3. 3.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) salt water (d) tamarind water
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the light we look in
7. 7.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
8. 8.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) baking soda water (d) tamarind water
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
12. 12.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) baking soda water (d) lemon juice
14. 14.True or false: plain water is a base. (a) False (b) True
15. 15.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) plain water (d) baking soda water
16. 16.⚖️ 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
17. 17.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
18. 18.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
20. 20.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
21. 21.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
23. 23.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is magnetic (d) soap is an acid
24. 24.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a mirror (c) white paper strips (d) a dropper or spoon
25. 25.True or false: detergent water is neutral. (a) True (b) False
26. 26.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
27. 27.True or false: sugar water is an acid. (a) False (b) True
28. 28.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
30. 30.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
32. 32.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
36. 36.🛟 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
37. 37.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) yeast (d) soap solution
39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
40. 40.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed

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