Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 469 · 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) glucose powder (b) cooking oil (c) chalk powder (d) sand
2. 2.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) leaves (c) stem (d) roots
3. 3.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
4. 4.🍞 Which of these is something yeast does not need? (a) warm water (b) a magnet (c) time (d) sugar
5. 5.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) turmeric powder (c) a mirror (d) a clear plastic bag
6. 6.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) blue words (c) almost nothing (d) a rainbow
7. 7.True or false: sand does not dissolve in water. (a) False (b) True
8. 8.True or false: fresh cream is needed for making butter. (a) True (b) False
9. 9.🪴 Which of these is a job of the stem? (a) carry water upward (b) hold the plant in soil (c) take in water from soil (d) make seeds
10. 10.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a battery cell (d) a clean glass
11. 11.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) eat a few to check (c) never put seeds in mouth (d) feed them to pets
12. 12.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
13. 13.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) it is only melting (c) yes, a new gas forms (d) no, nothing changes
14. 14.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
15. 15.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) soil (c) salt (d) water
16. 16.True or false: a battery cell is needed for the secret lemon message. (a) False (b) True
17. 17.True or false: air is needed for a seed to sprout. (a) True (b) False
18. 18.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds on wet cotton (d) seeds in the freezer
19. 19.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
20. 20.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) turmeric powder (d) a funnel
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) flower (c) leaves (d) roots
24. 24.🧈 Which of these is a change that can be undone? (a) melting ice (b) browning lemon ink (c) cooking an egg (d) rusting iron
25. 25.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
26. 26.🔮 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
27. 27.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
28. 28.True or false: make seeds is a job of the flower. (a) False (b) True
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) muddy water (d) a mirror
30. 30.🧺 Which of these is not needed for making butter? (a) a bowl (b) a jar with a tight lid (c) a battery cell (d) cold water to rinse
31. 31.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) dipping the cotton bud (c) letting the paper dry (d) writing the message
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a magnet (d) lemon juice
33. 33.True or false: writing the message is a job a child can do. (a) True (b) False
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the same bottle
35. 35.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
37. 37.True or false: plain water is an acid. (a) True (b) False
38. 38.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) keep it away from eyes (c) put it in your mouth (d) shake it near your face
39. 39.🧺 Which of these is needed for making butter? (a) a magnet (b) fresh cream (c) a mirror (d) a battery cell
40. 40.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) vinegar (c) yeast (d) a potted plant

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