Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 786 · 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.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
2. 2.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
3. 3.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.True or false: a magnet is needed for the turmeric test. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
7. 7.⚖️ 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
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
11. 11.True or false: soap solution keeps turmeric yellow. (a) True (b) False
12. 12.True or false: water is not needed for the turmeric test. (a) True (b) False
13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) lemon juice
15. 15.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) yeast (d) lemon juice
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.True or false: vinegar keeps turmeric yellow. (a) False (b) True
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
21. 21.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) salt water (d) detergent water
23. 23.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a comb (d) a magnet
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
28. 28.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
29. 29.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
31. 31.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
32. 32.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
33. 33.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
34. 34.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
36. 36.🫧 Which of these is a base? (a) lemon juice (b) soap solution (c) salt water (d) curd
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.True or false: a comb is needed for the turmeric test. (a) False (b) True
39. 39.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) water (d) white paper strips

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