Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 772 · 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.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
2. 2.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) turmeric powder
4. 4.True or false: soap solution is a base. (a) False (b) True
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a comb (d) lemon juice
6. 6.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
8. 8.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
10. 10.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
12. 12.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
13. 13.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
14. 14.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
16. 16.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
18. 18.⚖️ 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
19. 19.🛟 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
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) white paper strips (d) a dropper or spoon
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) baking soda water (d) lemon juice
22. 22.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
23. 23.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) white paper strips (d) a balloon
24. 24.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the number of drops
26. 26.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) vinegar (d) sugar water
27. 27.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) white paper strips (d) a dropper or spoon
31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) lemon juice (d) vinegar
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
34. 34.True or false: soap solution keeps turmeric yellow. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a magnet (d) a dropper or spoon
38. 38.🛟 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
39. 39.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
40. 40.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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