Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 875 · 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.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) lemon juice
5. 5.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) salt water (d) detergent water
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
7. 7.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
8. 8.🔮 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
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the light we look in
10. 10.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
11. 11.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) turmeric powder (d) a mirror
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) turmeric powder (d) water
13. 13.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) lemon juice (d) tamarind water
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
15. 15.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
16. 16.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🫧 Which of these is an acid? (a) orange juice (b) detergent water (c) sugar water (d) baking soda water
19. 19.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
20. 20.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) plain water (d) soap solution
21. 21.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) lemon juice (d) a mirror
22. 22.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
24. 24.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
25. 25.True or false: soap solution keeps turmeric yellow. (a) False (b) True
26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
27. 27.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
28. 28.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
29. 29.True or false: salt water is a base. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a prism (d) a pulley
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a balloon (d) a dropper or spoon
34. 34.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) turmeric powder (d) soap solution
35. 35.🛟 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
36. 36.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a balloon (d) a dropper or spoon
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) turmeric powder (d) yeast

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