Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 489 · 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? What do we do with “how clear the water is”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🧈 Which of these is a change that can be undone? (a) melting ice (b) rusting iron (c) baking a cake (d) cooking an egg
4. 4.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) a mirror (d) a magnet
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
6. 6.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) sun or shade (b) the same kind of bag (c) amount of water drops (d) the time we wait
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the turmeric paper
9. 9.True or false: turmeric powder is not needed for the leafy bag test. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) salt (b) sugar (c) time (d) warm water
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the same jar (c) the amount of cream (d) the cream temperature
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) False (b) True
14. 14.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
15. 15.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) yes, a new gas forms (c) it is only melting (d) no, nothing changes
16. 16.🧺 Which of these is not needed for the secret lemon message? (a) a mirror (b) an adult with an iron (c) white paper (d) lemon juice
17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a few days (c) water (d) yeast
18. 18.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
19. 19.True or false: a mirror is not needed for sprouting seeds. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) a magnet
21. 21.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
22. 22.⚖️ 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
23. 23.True or false: an empty bottle is not needed for the fizzy balloon. (a) False (b) True
24. 24.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
25. 25.True or false: sugar water is neutral. (a) False (b) True
26. 26.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) folding paper (d) melting butter
27. 27.True or false: small pebbles dissolves in water. (a) False (b) True
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Which of these is needed for the fizzy balloon? (a) a tray for spills (b) a mirror (c) a seed (d) a comb
30. 30.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a battery cell (c) turmeric powder (d) sugar
31. 31.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they glow (c) they sprout faster (d) they do not sprout
32. 32.True or false: letting the paper dry is a job a child can do. (a) False (b) True
33. 33.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
34. 34.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) exactly the same (d) it fills with soil
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🌱 Why do the seeds on dry cotton not sprout? (a) they have no water (b) they are too wet (c) they have no soil (d) they have no salt
37. 37.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) filtering (d) sieving
38. 38.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a few days (c) a magnet (d) moong seeds
39. 39.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
40. 40.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True

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