Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 267 · 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.📘 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
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
4. 4.True or false: orange juice is an acid. (a) True (b) False
5. 5.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a magnet (d) a balloon
6. 6.🫧 Which of these is a base? (a) tamarind water (b) vinegar (c) baking soda water (d) lemon juice
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) tamarind water (d) salt water
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
9. 9.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) yeast (d) a dropper or spoon
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) salt water (d) soap solution
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a magnet
13. 13.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
14. 14.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) white paper strips (d) water
16. 16.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
18. 18.⚖️ 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
19. 19.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
20. 20.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a mirror (d) lemon juice
22. 22.⚖️ 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
23. 23.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
24. 24.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) detergent water (d) orange juice
25. 25.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) plain water (d) tamarind water
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) white paper strips (c) water (d) lemon juice
27. 27.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) soap solution (c) turmeric powder (d) water
28. 28.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) water (d) a balloon
29. 29.⚖️ 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 measure it (c) we change it
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) water (d) soap solution
31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
32. 32.True or false: sugar water keeps turmeric yellow. (a) True (b) False
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
34. 34.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False

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