Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 977 · 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 turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
4. 4.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a mirror (d) a dropper or spoon
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) turmeric powder (d) a balloon
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
7. 7.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap is magnetic (d) soap water is a base
8. 8.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
9. 9.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
11. 11.🫧 Which of these is neutral? (a) vinegar (b) orange juice (c) tamarind water (d) salt water
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) water (d) lemon juice
13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.True or false: salt water keeps turmeric yellow. (a) False (b) True
15. 15.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
16. 16.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
17. 17.True or false: plain water keeps turmeric yellow. (a) True (b) False
18. 18.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
19. 19.⚖️ 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
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
21. 21.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
22. 22.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
23. 23.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) white paper strips (d) yeast
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
25. 25.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
26. 26.True or false: sugar water keeps turmeric yellow. (a) False (b) True
27. 27.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.True or false: soap solution is an acid. (a) False (b) True
29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
31. 31.True or false: plain water is an acid. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) bright blue (d) white at once
34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
35. 35.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
37. 37.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
38. 38.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
39. 39.⚖️ 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
40. 40.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed

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