Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 986 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
2. 2.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a comb (d) a mirror
3. 3.True or false: yeast is needed for the turmeric test. (a) True (b) False
4. 4.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
6. 6.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a balloon (d) white paper strips
8. 8.🔮 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
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) a dropper or spoon (d) white paper strips
11. 11.True or false: sugar water is an acid. (a) True (b) False
12. 12.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
15. 15.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
17. 17.⚖️ 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
18. 18.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) orange juice (d) plain water
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) tamarind water (d) lemon juice
20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🫧 Which of these is a base? (a) tamarind water (b) detergent water (c) sugar water (d) vinegar
22. 22.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
23. 23.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a balloon (d) a battery cell
24. 24.True or false: water is not needed for the turmeric test. (a) False (b) True
25. 25.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
26. 26.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
27. 27.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
30. 30.True or false: salt water is an acid. (a) True (b) False
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
33. 33.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a mirror (d) soap solution
34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
35. 35.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
36. 36.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
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 turmeric paper (c) the colour we see
38. 38.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) lemon juice (d) salt water

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