Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 349 · 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? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the light we look in
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a balloon (d) lemon juice
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) water (d) lemon juice
5. 5.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) lemon juice (d) salt water
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) soap solution (d) vinegar
9. 9.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
10. 10.True or false: soap solution is needed for the turmeric test. (a) True (b) False
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) lemon juice (d) a dropper or spoon
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) lemon juice (d) plain water
13. 13.⚖️ 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
14. 14.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
17. 17.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
20. 20.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
21. 21.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
22. 22.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
23. 23.🫧 Which of these is a base? (a) salt water (b) detergent water (c) sugar water (d) tamarind water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
25. 25.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
26. 26.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
27. 27.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
29. 29.🫧 Which of these is a base? (a) baking soda water (b) tamarind water (c) lemon juice (d) sugar water
30. 30.📘 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
31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
33. 33.True or false: lemon juice is a base. (a) True (b) False
34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a mirror (d) a dropper or spoon
35. 35.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) soap solution
36. 36.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) white paper strips
37. 37.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
38. 38.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
39. 39.🫧 Which of these is neutral? (a) curd (b) baking soda water (c) lemon juice (d) salt water
40. 40.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed

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