Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 993 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) water (d) a magnet
2. 2.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
3. 3.True or false: orange juice is a base. (a) False (b) True
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
5. 5.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
6. 6.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) plain water (d) curd
7. 7.⚖️ 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 colour we see (c) the turmeric paper (d) the number of drops
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) baking soda water (d) sugar water
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
11. 11.🔮 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
12. 12.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
13. 13.True or false: plain water keeps turmeric yellow. (a) False (b) True
14. 14.🫧 Which of these is neutral? (a) orange juice (b) plain water (c) curd (d) tamarind water
15. 15.True or false: detergent water keeps turmeric yellow. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
17. 17.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.🛟 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
19. 19.🔮 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
20. 20.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
21. 21.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) lemon juice (d) water
22. 22.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
23. 23.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
24. 24.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) detergent water (d) lemon juice
27. 27.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
29. 29.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
30. 30.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
31. 31.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) a dropper or spoon (d) water
33. 33.🫧 Which of these is neutral? (a) tamarind water (b) baking soda water (c) sugar water (d) orange juice
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) soap solution (d) turmeric powder
35. 35.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) a magnet (d) a comb
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) salt water (d) vinegar
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a battery cell
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) tamarind water (d) soap solution
40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot

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