Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 713 · 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 of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
4. 4.True or false: orange juice is neutral. (a) False (b) True
5. 5.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) plain water (d) salt water
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
7. 7.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) turmeric powder (d) a balloon
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.⚖️ 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 number of drops (c) the light we look in (d) the turmeric paper
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a mirror (d) a dropper or spoon
14. 14.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
15. 15.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
16. 16.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
17. 17.⚖️ 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
18. 18.🫧 Which of these is an acid? (a) tamarind water (b) sugar water (c) baking soda water (d) detergent water
19. 19.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
20. 20.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
25. 25.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) water (d) soap solution
27. 27.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
28. 28.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) soap solution (d) a dropper or spoon
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
32. 32.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) tamarind water (c) sugar water (d) soap solution
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
35. 35.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
37. 37.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
39. 39.True or false: soap solution is needed for the turmeric test. (a) True (b) False
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a magnet

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