Turmeric Indicator Experiment Worksheet

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

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