Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 336 · 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.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
2. 2.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
3. 3.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a balloon (d) white paper strips
4. 4.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
5. 5.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
6. 6.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it disappears (d) it turns darker red
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
8. 8.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
9. 9.🫧 Which of these is an acid? (a) sugar water (b) tamarind water (c) detergent water (d) salt water
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) salt water (d) soap solution
12. 12.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
13. 13.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
14. 14.True or false: detergent water is an acid. (a) True (b) False
15. 15.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
16. 16.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
17. 17.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) a battery cell
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: sugar water is neutral. (a) True (b) False
23. 23.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a balloon (d) soap solution
24. 24.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) sugar water
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) detergent water (d) lemon juice
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) turmeric powder (d) a dropper or spoon
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
28. 28.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
29. 29.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
30. 30.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
31. 31.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) yeast
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) lemon juice (d) soap solution
34. 34.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
35. 35.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.True or false: a magnet is needed for the turmeric test. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
38. 38.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
39. 39.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow

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