Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 812 · 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? True or false: the amount poured is kept the same. (a) True (b) False
2. 2.True or false: fresh cream is needed for making butter. (a) True (b) False
3. 3.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
5. 5.True or false: yeast is needed for the leafy bag test. (a) True (b) False
6. 6.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) seal it in a glass jar (c) shake it near your face (d) put it in your mouth
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.True or false: a balloon is needed for sprouting seeds. (a) False (b) True
9. 9.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) baking soda (c) a tray for spills (d) a magnet
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) a timer (c) a jar with a tight lid (d) a bowl
11. 11.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) baking soda water
14. 14.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) it grows bigger (c) it shrinks (d) there is no change
15. 15.True or false: dipping the cotton bud is a job for an adult. (a) True (b) False
16. 16.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) size of the balloon (b) the amount of sugar (c) the water temperature (d) the amount of water
18. 18.True or false: a mirror is not needed for the fizzy balloon. (a) False (b) True
19. 19.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) turmeric powder (d) yeast
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a mirror (d) salt
22. 22.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
23. 23.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
24. 24.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to colour rice (c) to wash dishes (d) to make bread rise
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the same kind of bag
26. 26.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sawdust (d) baking soda
27. 27.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
28. 28.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) table salt (d) baking soda
29. 29.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) a magnet (d) lemon juice
30. 30.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
31. 31.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) the youngest child (c) only an adult (d) any child
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a battery cell (d) a mirror
33. 33.🫗 How do we separate tea leaves from tea? (a) filtering (b) sieving (c) winnowing (d) handpicking
34. 34.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
35. 35.🍞 Which of these is something yeast needs? (a) warm water (b) sunlight (c) a magnet (d) vinegar
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) time to make butter (c) the amount of cream (d) how hard we shake
38. 38.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) roots (c) flower (d) leaves
39. 39.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
40. 40.🛟 The water for the yeast should be ___. (a) boiling hot (b) warm, not hot (c) ice cold (d) very salty

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