Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 803 · 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: a mirror is needed for the turmeric test. (a) True (b) False
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the ironing time (c) the kind of juice
4. 4.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) yeast (c) white paper (d) turmeric powder
5. 5.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) orange juice (d) detergent water
6. 6.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) a balloon (c) cotton wool (d) water
7. 7.True or false: baking soda water is an acid. (a) True (b) False
8. 8.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) an ingredient ran out (c) the bottle got tired (d) the gas froze
9. 9.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) shaking adds salt (c) fat bits stick together (d) the lid is warm
10. 10.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) detergent water (d) salt water
11. 11.🧺 Do we need a timer for making butter? (a) not needed (b) needed
12. 12.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they have no water (c) they are too wet (d) they have no soil
13. 13.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
14. 14.True or false: a mirror is not needed for the secret lemon message. (a) True (b) False
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) the amount of vinegar (c) size of the balloon (d) spoons of baking soda
16. 16.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
18. 18.🧺 Which of these is needed for making butter? (a) a bowl (b) a mirror (c) turmeric powder (d) a battery cell
19. 19.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) wet or dry cotton (c) the number of seeds (d) the same place
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
22. 22.🧺 Which of these is not needed for the yeast balloon? (a) a mirror (b) warm water (c) sugar (d) a small bottle
23. 23.🪴 Which of these is a job of the stem? (a) give out water vapour (b) hold the plant in soil (c) carry water upward (d) make seeds
24. 24.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
25. 25.True or false: a timer is needed for making butter. (a) True (b) False
26. 26.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) True (b) False
27. 27.🌱 Is soil needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
28. 28.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it is too big (c) it can block breathing (d) it changes colour
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the same dish (b) the kind of salt (c) the amount of water (d) sunny or shady place
30. 30.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) yeast (c) a small bowl (d) lemon juice
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🌱 Which of these is needed for a seed to sprout? (a) soil (b) sugar (c) sunlight (d) air
35. 35.🔍 Which is the odd one out? (a) melting ice (b) browning lemon ink (c) baking a cake (d) milk turning to curd
36. 36.🔍 Which is the odd one out? (a) warm water (b) sugar (c) a magnet (d) time
37. 37.True or false: sunlight is something yeast does not need. (a) False (b) True
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) vinegar (d) a rubber band
39. 39.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
40. 40.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) plain water (d) soap solution

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