Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 865 · 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.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
2. 2.True or false: a comb is not needed for the turmeric test. (a) True (b) False
3. 3.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
4. 4.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
5. 5.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) tamarind water (d) plain water
6. 6.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the turmeric paper
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: orange juice is neutral. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a comb
13. 13.True or false: sugar water keeps turmeric yellow. (a) True (b) False
14. 14.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
15. 15.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.True or false: salt water is neutral. (a) False (b) True
17. 17.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
18. 18.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
20. 20.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
23. 23.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a comb (d) a dropper or spoon
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) water
25. 25.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
26. 26.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) lemon juice (d) soap solution
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
29. 29.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) salt water (d) soap solution
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) water
34. 34.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a battery cell (d) a balloon
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
37. 37.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
39. 39.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
40. 40.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow

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