Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 552 · 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.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) vinegar (d) tamarind water
2. 2.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.🧺 Which of these is needed for the turmeric test? (a) yeast (b) lemon juice (c) a battery cell (d) a magnet
4. 4.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
5. 5.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
6. 6.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
7. 7.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a battery cell (d) a dropper or spoon
9. 9.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
10. 10.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
12. 12.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
13. 13.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a mirror (d) a balloon
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
16. 16.⚖️ 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
17. 17.🫧 Which of these is a base? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
18. 18.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
21. 21.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
22. 22.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) turmeric powder (d) yeast
24. 24.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) soap solution (c) plain water (d) tamarind water
25. 25.⚖️ 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
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) vinegar (d) sugar water
30. 30.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
32. 32.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the colour we see
35. 35.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
38. 38.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) plain water (d) baking soda water
39. 39.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a balloon (d) soap solution
40. 40.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator

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