Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 941 · 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 — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a kind of salt (d) a tiny living fungus
3. 3.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.🧺 Do we need turmeric powder for sprouting seeds? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) time (b) warm water (c) sugar (d) a magnet
8. 8.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) cold water to rinse (c) a mirror (d) fresh cream
9. 9.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a bowl (c) a battery cell (d) fresh cream
10. 10.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) tea leaves from tea (c) small stones from dal (d) chaff from wheat grain
11. 11.🧺 Do we need fresh cream for making butter? (a) not needed (b) needed
12. 12.True or false: seeds on wet cotton does not sprout. (a) True (b) False
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a mirror (c) dry yeast (d) warm water
15. 15.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
16. 16.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) handpicking (d) filtering
17. 17.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) writing the message (b) dipping the cotton bud (c) reading the message (d) ironing the paper
20. 20.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) soap solution
21. 21.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) sugar (c) sunlight (d) salt
22. 22.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) white paper (c) an adult with an iron (d) a balloon
23. 23.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a magnet (c) a balloon (d) turmeric powder
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
25. 25.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) blue words (c) dark brown words (d) a rainbow
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
27. 27.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.🧺 Do we need lemon juice for the secret lemon message? (a) needed (b) not needed
29. 29.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
30. 30.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
31. 31.🧺 Which of these is needed for making butter? (a) a magnet (b) cold water to rinse (c) a mirror (d) turmeric powder
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.True or false: tamarind water is an acid. (a) True (b) False
34. 34.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
35. 35.True or false: cooking oil does not dissolve in water. (a) True (b) False
36. 36.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) lemon juice (d) plain water
37. 37.True or false: baking a cake is a change that can be undone. (a) False (b) True
38. 38.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the size of the plant (b) amount of water drops (c) sun or shade (d) the same kind of bag
40. 40.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it

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