Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 747 · 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.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) exactly the same (d) much less water
2. 2.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
3. 3.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) sugar (c) a balloon (d) a battery cell
5. 5.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
6. 6.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
8. 8.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
9. 9.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bran from wheat flour (c) salt from sea water (d) bad grains from rice
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) turmeric powder (d) muddy water
11. 11.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
12. 12.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
13. 13.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
14. 14.⚖️ 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
15. 15.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) give out water vapour (c) take in water from soil (d) carry water upward
16. 16.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) white paper (c) lemon juice (d) a magnet
17. 17.🧺 Do we need moong seeds for sprouting seeds? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) a magnet (d) yeast
19. 19.True or false: a mirror is not needed for the yeast balloon. (a) True (b) False
20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a battery cell (d) a timer
21. 21.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) sunlight (d) yeast
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) a small bowl (d) a balloon
25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) lemon juice (c) salt water (d) vinegar
27. 27.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
28. 28.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) the yeast is killed (b) it glows (c) it grows faster (d) it turns to sugar
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
30. 30.🧺 Do we need a battery cell for the secret lemon message? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a spoon (d) yeast
32. 32.🍋 Which of these steps is a job for an adult? (a) reading the message (b) letting the paper dry (c) dipping the cotton bud (d) plugging in the iron
33. 33.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) sand
34. 34.🧺 Which of these is needed for sprouting seeds? (a) cotton wool (b) a balloon (c) a mirror (d) a battery cell
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the kind of balloon
36. 36.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
37. 37.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) vinegar (c) a potted plant (d) sunlight
38. 38.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: melting butter is a change that can be undone. (a) True (b) False
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a mirror (c) a balloon (d) sugar

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