Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 412 · 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 balloon is needed for the yeast balloon. (a) True (b) False
2. 2.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
3. 3.True or false: melting ice is a change that can be undone. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) salt water (d) sugar water
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) a mirror
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) True (b) False
8. 8.📘 What is yeast? (a) a kind of sugar (b) a tiny living fungus (c) a kind of stone (d) a kind of salt
9. 9.🍋 Which of these steps is a job for an adult? (a) writing the message (b) letting the paper dry (c) dipping the cotton bud (d) ironing the paper
10. 10.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) yeast (d) a mirror
11. 11.True or false: a magnet is not needed for making butter. (a) True (b) False
12. 12.True or false: baking soda water is a base. (a) True (b) False
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
14. 14.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a mirror (c) a clear plastic bag (d) a magnet
15. 15.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) air (c) sunlight (d) water
16. 16.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
17. 17.🫗 How do we separate husk from rice grain? (a) winnowing (b) sieving (c) evaporating (d) handpicking
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
20. 20.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a magnet (d) a balloon
21. 21.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) True (b) False
22. 22.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
23. 23.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) the cotton wool (c) the air (d) food stored in the seed
24. 24.🧈 Which of these is a change that can be undone? (a) baking a cake (b) folding paper (c) browning lemon ink (d) milk turning to curd
25. 25.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) orange juice (d) baking soda water
26. 26.True or false: vinegar is a base. (a) False (b) True
27. 27.⚖️ 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) how hard we shake
28. 28.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
29. 29.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
32. 32.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
33. 33.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) smoke (c) air from outside (d) steam
34. 34.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a battery cell (d) salt
36. 36.True or false: a battery cell is not needed for the yeast balloon. (a) False (b) True
37. 37.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a magnet (c) a funnel or spoon (d) a battery cell
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
39. 39.True or false: sunlight is not needed for the leafy bag test. (a) False (b) True
40. 40.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) yeast (c) a balloon (d) white paper

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