Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 284 · 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.🔍 Which is the odd one out? (a) warm water (b) time (c) sunlight (d) sugar
2. 2.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) skip washing (c) rub your eyes (d) wash your hands
3. 3.🔍 Which is the odd one out? (a) ironing the paper (b) letting the paper dry (c) plugging in the iron (d) cutting the lemon
4. 4.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) cooking an egg (c) melting ice (d) freezing water
5. 5.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) salt water (d) sugar water
6. 6.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is the one thing we change. (a) True (b) False
8. 8.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) flower (c) leaves (d) roots
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🛟 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
11. 11.🔮 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
12. 12.⚖️ 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
13. 13.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) reading the message (c) letting the paper dry (d) putting the iron away
14. 14.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
15. 15.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) the ink is magnetic (c) the paper ate it (d) it turned into air
16. 16.True or false: bran from wheat flour is done by sieving. (a) False (b) True
17. 17.🧺 Which of these is needed for making butter? (a) yeast (b) a mirror (c) a balloon (d) fresh cream
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False
19. 19.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) sand and pebbles (d) a magnet
20. 20.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it
21. 21.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) make seeds (c) hold the plant in soil (d) make food in sunlight
22. 22.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a balloon (c) a comb (d) a magnet
23. 23.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) letting the paper dry (d) cutting the lemon
24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a comb (d) white paper strips
25. 25.🫧 Which of these is a base? (a) detergent water (b) salt water (c) tamarind water (d) vinegar
26. 26.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) flower (c) leaves (d) roots
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
28. 28.🧺 Which of these is not needed for sprouting seeds? (a) a magnet (b) water (c) moong seeds (d) a few days
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) vinegar (b) time (c) a magnet (d) salt
32. 32.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
34. 34.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) an empty bottle (c) a magnet (d) baking soda
35. 35.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
36. 36.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a magnet (c) sugar (d) an empty bottle
37. 37.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it turns pink (b) it is much faster (c) it makes salt (d) it takes much longer
38. 38.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) turmeric powder (b) white paper (c) a cotton bud (d) lemon juice
40. 40.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) lemon juice (d) a dropper or spoon

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