Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 184 · 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.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
3. 3.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) turmeric powder (d) a magnet
4. 4.True or false: a mirror is needed for the turmeric test. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the number of drops
6. 6.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
7. 7.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
8. 8.🫧 Which of these is a base? (a) detergent water (b) tamarind water (c) vinegar (d) orange juice
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
10. 10.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
13. 13.True or false: a comb is needed for the turmeric test. (a) False (b) True
14. 14.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🔮 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
18. 18.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
19. 19.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
20. 20.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
21. 21.True or false: detergent water is neutral. (a) False (b) True
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) soap solution (d) water
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
24. 24.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
25. 25.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
26. 26.True or false: sugar water is a base. (a) True (b) False
27. 27.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
29. 29.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a dropper or spoon (d) a magnet
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) a dropper or spoon (d) soap solution
31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
34. 34.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) detergent water (d) vinegar
37. 37.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) tamarind water (d) salt water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) soap solution (d) turmeric powder
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see

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