Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 708 · 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 is a base? (a) plain water (b) detergent water (c) tamarind water (d) curd
2. 2.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
3. 3.True or false: soap solution is an acid. (a) True (b) False
4. 4.True or false: soap solution is a base. (a) False (b) True
5. 5.True or false: a comb is needed for the turmeric test. (a) True (b) False
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
9. 9.🍋 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
10. 10.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) lemon juice (d) vinegar
11. 11.True or false: salt water is neutral. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ 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
15. 15.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
17. 17.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) water (d) a magnet
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
20. 20.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) yeast (d) a battery cell
21. 21.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a balloon (d) water
23. 23.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) tamarind water (d) soap solution
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the number of drops
25. 25.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
26. 26.🫧 Which of these is an acid? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) water (d) yeast
32. 32.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a battery cell (d) water
33. 33.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
34. 34.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
35. 35.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) a dropper or spoon (d) turmeric powder
37. 37.True or false: soap solution is needed for the turmeric test. (a) False (b) True
38. 38.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
39. 39.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
40. 40.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator

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