Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 804 · 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: a mirror is needed for the turmeric test. (a) True (b) False
2. 2.True or false: orange juice is an acid. (a) True (b) False
3. 3.True or false: water is not needed for the turmeric test. (a) True (b) False
4. 4.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.⚖️ 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 number of drops
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a battery cell (d) water
7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
8. 8.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
9. 9.🟡 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
10. 10.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) water (d) a comb
11. 11.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a dropper or spoon (d) a balloon
12. 12.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
14. 14.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) baking soda water (d) vinegar
16. 16.True or false: vinegar is a base. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) yeast (d) soap solution
19. 19.True or false: soap solution is a base. (a) True (b) False
20. 20.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.True or false: plain water keeps turmeric yellow. (a) False (b) True
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) detergent water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
26. 26.🛟 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
27. 27.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🫧 Which of these is an acid? (a) sugar water (b) orange juice (c) plain water (d) baking soda water
29. 29.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
31. 31.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) water (d) a balloon
34. 34.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
37. 37.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) turmeric powder (d) yeast
38. 38.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) baking soda water (d) lemon juice
39. 39.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
40. 40.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) lemon juice

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