Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 76 · 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: take in water from soil is a job of the roots. (a) False (b) True
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
3. 3.True or false: cooking oil dissolves in water. (a) False (b) True
4. 4.True or false: plain water is neutral. (a) False (b) True
5. 5.True or false: a magnet is needed for the turmeric test. (a) False (b) True
6. 6.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
7. 7.True or false: cooking an egg is a change that can be undone. (a) True (b) False
8. 8.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a comb (c) baking soda (d) an empty bottle
9. 9.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) turmeric powder (c) a mirror (d) dry yeast
10. 10.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) dissolving salt (d) baking a cake
11. 11.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
13. 13.🌱 Why do the seeds on dry cotton not sprout? (a) they are too wet (b) they have no salt (c) they have no water (d) they have no soil
14. 14.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) melting butter (d) cooking an egg
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) the kind of seeds (c) wet or dry cotton (d) the same place
17. 17.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) an empty bottle (c) sugar (d) vinegar
21. 21.True or false: a small bowl is not needed for sprouting seeds. (a) False (b) True
22. 22.🧺 Which of these is not needed for making butter? (a) turmeric powder (b) a timer (c) cold water to rinse (d) fresh cream
23. 23.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it changes colour (c) it is too big (d) it gets wet
24. 24.🧺 Which of these is needed for the secret lemon message? (a) an adult with an iron (b) turmeric powder (c) a battery cell (d) yeast
25. 25.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
26. 26.🧺 Which of these is needed for making butter? (a) a balloon (b) a magnet (c) a bowl (d) a mirror
27. 27.🍞 Which of these is something yeast needs? (a) vinegar (b) sunlight (c) a magnet (d) time
28. 28.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: fresh cream is needed for making butter. (a) False (b) True
30. 30.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a rubber band (c) vinegar (d) sunlight
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda (d) the same bottle
32. 32.📘 What is yeast? (a) a kind of salt (b) a kind of stone (c) a tiny living fungus (d) a kind of sugar
33. 33.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) browning lemon ink (d) melting ice
34. 34.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a few hours (d) yeast
36. 36.🧺 Which of these is needed for making butter? (a) a battery cell (b) a balloon (c) fresh cream (d) a mirror
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a battery cell (d) salt
38. 38.True or false: give out water vapour is a job of the leaves. (a) False (b) True
39. 39.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) warm water (d) sunlight
40. 40.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) a battery cell (c) white paper (d) a magnet

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