Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 172 · 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 tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
2. 2.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) yeast (d) water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
8. 8.🫧 Which of these is an acid? (a) baking soda water (b) orange juice (c) soap solution (d) sugar water
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a magnet (d) water
10. 10.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
11. 11.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
12. 12.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a prism (d) a pulley
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
14. 14.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
16. 16.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
19. 19.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
20. 20.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
21. 21.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
22. 22.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
23. 23.⚖️ 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
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
26. 26.True or false: sugar water is neutral. (a) False (b) True
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) a dropper or spoon (d) lemon juice
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) vinegar (d) tamarind water
29. 29.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) water (d) a magnet
30. 30.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
31. 31.True or false: detergent water keeps turmeric yellow. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
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 liquid we test (c) the number of drops (d) the colour we see
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) soap solution (d) a dropper or spoon
35. 35.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) soap solution (d) lemon juice
36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
37. 37.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.True or false: a balloon is needed for the turmeric test. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
40. 40.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False

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