Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 422 · 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.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) gently, not too tight (c) with sharp wire (d) as tight as possible
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a magnet (c) a timer (d) fresh cream
3. 3.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) sawdust
4. 4.🧺 Do we need a few days for sprouting seeds? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) white paper (d) turmeric powder
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
7. 7.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) time (d) a magnet
8. 8.🌱 Which of these is needed for a seed to sprout? (a) air (b) salt (c) sunlight (d) sugar
9. 9.🔍 Which is the odd one out? (a) curd (b) orange juice (c) baking soda water (d) vinegar
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a mirror
11. 11.True or false: baking soda water is an acid. (a) True (b) False
12. 12.🌱 What comes out of a moong seed first when it sprouts? (a) a flower (b) a fruit (c) a thorn (d) a tiny root
13. 13.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) transpiration (c) germination (d) reflection
14. 14.🛟 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
15. 15.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
16. 16.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
17. 17.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the same jar (b) the cream temperature (c) time to make butter (d) the amount of cream
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) letting the paper dry (b) reading the message (c) dipping the cotton bud (d) putting the iron away
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
23. 23.True or false: tamarind water is an acid. (a) True (b) False
24. 24.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a rubber band (c) a mirror (d) a few hours
25. 25.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
26. 26.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a small bottle (c) warm water (d) a battery cell
27. 27.🔍 Which is the odd one out? (a) salt (b) warmth (c) sunlight (d) soil
28. 28.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) False (b) True
30. 30.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
31. 31.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
32. 32.⚖️ 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) days to see crystals (c) the amount of water (d) sunny or shady place
33. 33.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) chalk powder (d) table salt
34. 34.🧺 Which of these is needed for the yeast balloon? (a) warm water (b) a magnet (c) turmeric powder (d) a comb
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same glass (c) the same muddy water (d) the amount poured
36. 36.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) sugar (d) time
37. 37.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
38. 38.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) roots (c) flower (d) leaves
39. 39.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the number of seeds
40. 40.🧺 Do we need a magnet for making butter? (a) needed (b) not needed

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