Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 296 · 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 of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) soap solution (d) lemon juice
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
6. 6.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
7. 7.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
8. 8.True or false: sugar water is neutral. (a) False (b) True
9. 9.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
10. 10.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
11. 11.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
12. 12.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) turmeric powder (d) white paper strips
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the light we look in (d) the liquid we test
14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
16. 16.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) detergent water (d) plain water
19. 19.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
22. 22.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a magnet (c) turmeric powder (d) a dropper or spoon
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
24. 24.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
25. 25.True or false: plain water is neutral. (a) False (b) True
26. 26.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) sugar water (d) soap solution
27. 27.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
28. 28.True or false: sugar water is an acid. (a) False (b) True
29. 29.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) turmeric powder (d) white paper strips
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) water (d) white paper strips
36. 36.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
37. 37.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
38. 38.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
39. 39.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
40. 40.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids