Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 958 · 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 magnet for the turmeric test? (a) not needed (b) needed
2. 2.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
3. 3.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) vinegar
5. 5.True or false: water is not needed for the turmeric test. (a) True (b) False
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) lemon juice
7. 7.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) sugar water (d) tamarind water
8. 8.True or false: soap solution keeps turmeric yellow. (a) True (b) False
9. 9.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
10. 10.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
13. 13.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
14. 14.🫧 Which of these is a base? (a) sugar water (b) vinegar (c) plain water (d) soap solution
15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
16. 16.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
17. 17.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
18. 18.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
19. 19.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
20. 20.⚖️ 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 liquid we test (d) the turmeric paper
21. 21.⚖️ 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
22. 22.🛟 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
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
26. 26.True or false: sugar water keeps turmeric yellow. (a) False (b) True
27. 27.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a magnet (d) water
28. 28.True or false: yeast is needed for the turmeric test. (a) False (b) True
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the colour we see
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) white paper strips (d) a dropper or spoon
31. 31.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.True or false: a comb is not needed for the turmeric test. (a) True (b) False
34. 34.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
35. 35.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
36. 36.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
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) False (b) True
39. 39.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) a magnet (d) a balloon
40. 40.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True

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