Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 180 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same muddy water (c) how clear the water is
2. 2.True or false: a cotton bud is needed for the secret lemon message. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) cutting the lemon (b) ironing the paper (c) plugging in the iron (d) letting the paper dry
4. 4.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a few hours (c) a clear plastic bag (d) a battery cell
5. 5.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) hydrogen (c) helium (d) carbon dioxide
6. 6.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) writing stays faint (c) it gets darker (d) writing turns green
7. 7.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
8. 8.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
9. 9.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
10. 10.True or false: melting ice is a change that cannot be undone. (a) True (b) False
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
12. 12.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) salt
13. 13.True or false: turmeric powder is not needed for making butter. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) putting the iron away (d) cutting the lemon
15. 15.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) stem (c) flower (d) roots
16. 16.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) give out water vapour (c) hold up the leaves (d) take in water from soil
17. 17.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a magnet (c) a few days (d) a small bowl
19. 19.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
20. 20.True or false: melting butter is a change that cannot be undone. (a) True (b) False
21. 21.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
23. 23.True or false: table salt does not dissolve in water. (a) True (b) False
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) water (c) cotton wool (d) a balloon
25. 25.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
26. 26.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) False (b) True
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
29. 29.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) winnowing (d) evaporating
30. 30.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a potted plant (c) a clear plastic bag (d) yeast
31. 31.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a tray for spills (c) vinegar (d) a comb
33. 33.True or false: glucose powder dissolves in water. (a) True (b) False
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) warm, not hot (d) boiling hot
36. 36.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
37. 37.🧺 Which of these is not needed for making butter? (a) a magnet (b) fresh cream (c) a jar with a tight lid (d) cold water to rinse
38. 38.🔍 Which is the odd one out? (a) sunlight (b) salt (c) warm water (d) a magnet
39. 39.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
40. 40.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed

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