Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 885 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
2. 2.True or false: water is not needed for the turmeric test. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the turmeric paper
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a magnet
5. 5.🫧 Which of these is an acid? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
6. 6.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) lemon juice
7. 7.⚖️ 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
8. 8.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
13. 13.True or false: soap solution keeps turmeric yellow. (a) False (b) True
14. 14.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
15. 15.⚖️ 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 liquid we test (c) the number of drops (d) the light we look in
16. 16.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a comb (c) water (d) a dropper or spoon
19. 19.🛟 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
20. 20.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
22. 22.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) sugar water (d) plain water
23. 23.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
25. 25.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) soap solution (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
29. 29.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
30. 30.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) baking soda water (d) plain water
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
33. 33.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
34. 34.🫧 Which of these is an acid? (a) curd (b) soap solution (c) detergent water (d) baking soda water
35. 35.True or false: sugar water keeps turmeric yellow. (a) True (b) False
36. 36.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
37. 37.🫧 Which of these is a base? (a) detergent water (b) salt water (c) tamarind water (d) curd
38. 38.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
39. 39.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) water (d) a comb
40. 40.🔮 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

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