Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 533 · 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 of these is needed for the turmeric test? (a) a balloon (b) water (c) a magnet (d) a mirror
2. 2.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
3. 3.🧺 Which of these is needed for the yeast balloon? (a) a small bottle (b) a battery cell (c) a magnet (d) turmeric powder
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) turmeric powder (d) a magnet
5. 5.🫧 Which of these is neutral? (a) sugar water (b) vinegar (c) tamarind water (d) curd
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) True (b) False
8. 8.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
9. 9.True or false: a battery cell is needed for the secret lemon message. (a) False (b) True
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is the one thing we change. (a) False (b) True
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) time to make butter (c) the cream temperature (d) the same jar
12. 12.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) still runny cream (c) ghee (d) cheese
13. 13.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a magnet (c) baking soda (d) a balloon
14. 14.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
15. 15.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) nothing at all (c) salt crystals (d) tiny water drops
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
17. 17.True or false: take in water from soil is a job of the roots. (a) False (b) True
18. 18.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
19. 19.True or false: boiled seeds does not sprout. (a) True (b) False
20. 20.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
21. 21.True or false: carry water upward is a job of the roots. (a) True (b) False
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
23. 23.True or false: a balloon is needed for making butter. (a) True (b) False
24. 24.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a magnet (c) a potted plant (d) sunlight
26. 26.True or false: yeast is needed for growing salt crystals. (a) True (b) False
27. 27.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
29. 29.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a shallow dish (d) a spoon
31. 31.🌱 Which of these is not needed for a seed to sprout? (a) water (b) soil (c) air (d) warmth
32. 32.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) evaporating (d) filtering
33. 33.True or false: a tray for spills is not needed for the fizzy balloon. (a) True (b) False
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a battery cell (b) an adult with an iron (c) a cotton bud (d) white paper
35. 35.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is cold (c) it is magnetic (d) it is sticky
36. 36.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) cooking an egg (b) dissolving salt (c) melting ice (d) freezing water
40. 40.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a mirror (c) baking soda (d) a battery cell

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