Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 837 · 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 what we measure. (a) True (b) False
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) sugar water (d) baking soda water
3. 3.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a balloon (c) a mirror (d) a magnet
4. 4.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
5. 5.True or false: tamarind water is a base. (a) False (b) True
6. 6.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) baking soda water (d) sugar water
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.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
9. 9.⚖️ 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
10. 10.True or false: detergent water keeps turmeric yellow. (a) True (b) False
11. 11.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
13. 13.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) baking soda water (d) salt water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
16. 16.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
17. 17.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) yeast (d) turmeric powder
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) a dropper or spoon (d) water
20. 20.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
21. 21.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) vinegar
22. 22.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a battery cell (d) white paper strips
23. 23.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
24. 24.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
25. 25.🔮 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
26. 26.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
27. 27.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
30. 30.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the colour we see
32. 32.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) soap solution (c) lemon juice (d) white paper strips
35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
36. 36.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
37. 37.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid

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