Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 841 · 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.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
2. 2.🫧 Which of these is a base? (a) sugar water (b) curd (c) detergent water (d) vinegar
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
4. 4.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) detergent water (d) sugar water
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
12. 12.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
13. 13.True or false: plain water keeps turmeric yellow. (a) True (b) False
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
17. 17.True or false: water is not needed for the turmeric test. (a) True (b) False
18. 18.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) soap solution (d) curd
19. 19.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) plain water (d) baking soda water
20. 20.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the number of drops
22. 22.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
23. 23.True or false: soap solution keeps turmeric yellow. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
27. 27.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
28. 28.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) white paper strips (d) a dropper or spoon
29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is hot (d) soap is magnetic
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) water (c) a dropper or spoon (d) soap solution
31. 31.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🛟 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
33. 33.True or false: sugar water keeps turmeric yellow. (a) True (b) False
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) water (d) lemon juice
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) tamarind water (d) baking soda water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False

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