Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 353 · 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.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
2. 2.🫧 Which of these is a base? (a) orange juice (b) soap solution (c) vinegar (d) lemon juice
3. 3.🟡 Which of these keeps turmeric yellow? (a) plain water (b) detergent water (c) soap solution (d) baking soda water
4. 4.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) vinegar (d) baking soda water
6. 6.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
7. 7.True or false: a comb is not needed for the turmeric test. (a) False (b) True
8. 8.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a battery cell (d) a comb
10. 10.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
11. 11.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
12. 12.⚖️ 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
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
15. 15.True or false: water is not needed for the turmeric test. (a) True (b) False
16. 16.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) white paper strips (d) a magnet
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
18. 18.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
20. 20.⚖️ 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the colour we see
22. 22.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) soap solution (d) orange juice
23. 23.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
24. 24.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.⚖️ 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
26. 26.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
27. 27.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🟡 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
29. 29.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
30. 30.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
31. 31.True or false: detergent water is a base. (a) False (b) True
32. 32.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
33. 33.True or false: detergent water is neutral. (a) True (b) False
34. 34.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) turmeric powder (d) water
38. 38.⚖️ 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
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
40. 40.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) baking soda water (d) tamarind water

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