Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 631 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.True or false: tamarind water is a base. (a) False (b) True
2. 2.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) a magnet (d) a battery cell
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a tray for spills (c) a seed (d) an empty bottle
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the filter material (c) the same muddy water (d) how clear the water is
6. 6.🔍 Which is the odd one out? (a) air (b) water (c) sunlight (d) warmth
7. 7.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) bright red (c) pale yellow (d) dark green
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
9. 9.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) baking soda (c) a balloon (d) a tray for spills
10. 10.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a mirror (c) turmeric powder (d) white paper strips
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a piece of string (d) a balloon
13. 13.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
14. 14.True or false: soap solution is an acid. (a) False (b) True
15. 15.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) roots (c) flower (d) stem
16. 16.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
17. 17.🧺 Which of these is needed for the fizzy balloon? (a) a balloon (b) a battery cell (c) a mirror (d) a seed
18. 18.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) no, it stays brown (c) yes, in the dark (d) yes, if cooled
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) vinegar (d) a mirror
21. 21.True or false: water is not needed for a seed to sprout. (a) False (b) True
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) sun or shade (b) the time we wait (c) amount of water drops (d) the same kind of bag
23. 23.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
24. 24.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) keep it away from eyes (c) shake it near your face (d) put it in your mouth
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
26. 26.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
27. 27.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it flowers more (c) it grows faster (d) it wilts and droops
28. 28.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a balloon (c) white paper (d) an adult with an iron
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) False (b) True
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the same cotton bud (b) the kind of juice (c) how dark the writing is
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) sunlight (c) yeast (d) a clear plastic bag
32. 32.True or false: make seeds is a job of the roots. (a) False (b) True
33. 33.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
34. 34.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it changes colour (c) it gets wet (d) it can block breathing
35. 35.🌱 Which of these is not needed for a seed to sprout? (a) sugar (b) warmth (c) water (d) air
36. 36.True or false: baking soda water is a base. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) sugar (b) warm water (c) time (d) a magnet
38. 38.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) tamarind water (d) sugar water
40. 40.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed

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