Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 727 · 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 number of drops”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: water is not needed for the turmeric test. (a) True (b) False
3. 3.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
4. 4.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
5. 5.True or false: lemon juice is neutral. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a comb (c) a battery cell (d) a balloon
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
10. 10.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) turmeric powder (d) water
13. 13.🛟 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
14. 14.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a balloon (d) turmeric powder
15. 15.True or false: orange juice is neutral. (a) False (b) True
16. 16.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
18. 18.True or false: sugar water is neutral. (a) False (b) True
19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
20. 20.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) curd (d) baking soda water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
22. 22.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) detergent water (d) salt water
23. 23.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
24. 24.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
26. 26.🫧 Which of these is an acid? (a) lemon juice (b) baking soda water (c) sugar water (d) salt water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
30. 30.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
31. 31.🫧 Which of these is neutral? (a) curd (b) salt water (c) vinegar (d) lemon juice
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) detergent water (d) plain water
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
36. 36.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a mirror (d) soap solution
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
38. 38.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) yeast (d) soap solution
40. 40.True or false: a comb is needed for the turmeric test. (a) False (b) True

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