Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 822 · 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 rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
2. 2.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
3. 3.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
5. 5.⚖️ 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
6. 6.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a comb (d) a battery cell
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
12. 12.🫧 Which of these is a base? (a) plain water (b) curd (c) vinegar (d) baking soda water
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
14. 14.⚖️ 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
15. 15.🟡 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
16. 16.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
17. 17.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
18. 18.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
19. 19.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) soap solution (d) tamarind water
20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
21. 21.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
22. 22.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
24. 24.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
26. 26.True or false: a comb is needed for the turmeric test. (a) True (b) False
27. 27.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
28. 28.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a magnet
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) turmeric powder (d) a balloon
31. 31.⚖️ 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 light we look in
32. 32.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) orange juice (d) salt water
33. 33.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
34. 34.True or false: lemon juice is neutral. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
36. 36.True or false: baking soda water is an acid. (a) False (b) True
37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a comb
40. 40.True or false: soap solution is needed for the turmeric test. (a) True (b) False

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