Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 697 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a balloon (d) turmeric powder
2. 2.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
3. 3.True or false: soap solution is an acid. (a) True (b) False
4. 4.True or false: orange juice is a base. (a) True (b) False
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) lemon juice (d) soap solution
6. 6.True or false: plain water is an acid. (a) False (b) True
7. 7.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
8. 8.True or false: yeast is not needed for the turmeric test. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the liquid we test
10. 10.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) yeast
12. 12.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
13. 13.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
14. 14.🔮 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
15. 15.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) salt water (d) vinegar
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
17. 17.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
18. 18.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.🛟 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
20. 20.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) a pulley (d) an indicator
22. 22.True or false: a comb is needed for the turmeric test. (a) False (b) True
23. 23.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) salt water (d) lemon juice
26. 26.True or false: salt water is a base. (a) True (b) False
27. 27.True or false: soap solution keeps turmeric yellow. (a) True (b) False
28. 28.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) lemon juice (d) a battery cell
29. 29.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
31. 31.🟡 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
32. 32.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) baking soda water (d) soap solution
33. 33.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🛟 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
35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a mirror (d) a dropper or spoon
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) lemon juice (d) water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow

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