Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 931 · 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 kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
2. 2.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
3. 3.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.True or false: orange juice is an acid. (a) True (b) False
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
7. 7.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
8. 8.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
9. 9.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a balloon (d) white paper strips
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.True or false: detergent water is a base. (a) False (b) True
13. 13.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
14. 14.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
16. 16.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
18. 18.🫧 Which of these is neutral? (a) vinegar (b) lemon juice (c) salt water (d) soap solution
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
20. 20.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) tamarind water
22. 22.True or false: water is not needed for the turmeric test. (a) False (b) True
23. 23.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a balloon (d) a dropper or spoon
25. 25.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) a magnet
28. 28.🫧 Which of these is neutral? (a) soap solution (b) detergent water (c) vinegar (d) sugar water
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
31. 31.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.True or false: a comb is needed for the turmeric test. (a) False (b) True
33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) a mirror (d) a magnet
35. 35.⚖️ 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 light we look in (d) the number of drops
36. 36.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) lemon juice (d) detergent water
38. 38.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed

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