Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 108 · 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 is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
2. 2.🛟 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
3. 3.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) water (d) a mirror
4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) a battery cell
5. 5.True or false: sugar water is an acid. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is an acid (d) soap is hot
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
9. 9.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) lemon juice (d) a comb
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) soap solution (d) lemon juice
11. 11.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) soap solution (d) lemon juice
13. 13.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) yeast (d) a balloon
14. 14.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
15. 15.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns yellow again (d) it turns blue
16. 16.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
19. 19.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
20. 20.⚖️ 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
21. 21.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
25. 25.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
26. 26.⚖️ 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
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
28. 28.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) soap solution (d) vinegar
31. 31.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
32. 32.🫧 Which of these is neutral? (a) soap solution (b) tamarind water (c) sugar water (d) lemon juice
33. 33.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a magnet (d) water
34. 34.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a dropper or spoon (d) a battery cell
35. 35.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) salt water (d) vinegar
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) sugar water (d) baking soda water
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) lemon juice (d) white paper strips
38. 38.⚖️ 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 colour we see (c) the liquid we test (d) the light we look in
39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
40. 40.True or false: soap solution is not needed for the turmeric test. (a) True (b) False

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