Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 762 · 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.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
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.🫧 Which of these is a base? (a) salt water (b) soap solution (c) plain water (d) tamarind water
4. 4.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
5. 5.True or false: curd is a base. (a) False (b) True
6. 6.True or false: a balloon is needed for the turmeric test. (a) True (b) False
7. 7.⚖️ 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
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) lemon juice (d) soap solution
10. 10.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
11. 11.True or false: salt water keeps turmeric yellow. (a) False (b) True
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) plain water (d) soap solution
16. 16.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
17. 17.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) lemon juice (c) a dropper or spoon (d) water
19. 19.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
20. 20.⚖️ 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 turmeric paper (d) the colour we see
21. 21.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a comb (d) soap solution
22. 22.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) lemon juice (d) white paper strips
24. 24.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
25. 25.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
27. 27.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) yeast (d) turmeric powder
28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
29. 29.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a dropper or spoon (d) a magnet
30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
33. 33.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) white paper strips (d) a battery cell
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) a dropper or spoon (d) soap solution
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
37. 37.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
38. 38.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
39. 39.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
40. 40.True or false: detergent water is a base. (a) False (b) True

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