Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 156 · 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 magnet is needed for sprouting seeds. (a) True (b) False
2. 2.True or false: a magnet is needed for making butter. (a) True (b) False
3. 3.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) sugar water (d) lemon juice
4. 4.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) it turns to honey (c) the balloon bursts (d) very little fizzing
5. 5.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
7. 7.🧂 Which of these does not dissolve in water? (a) sawdust (b) baking soda (c) food colour (d) sugar
8. 8.True or false: turmeric powder is not needed for making butter. (a) False (b) True
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False
13. 13.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) yeast (c) a few hours (d) turmeric powder
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) False (b) True
15. 15.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
16. 16.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
17. 17.True or false: letting the paper dry is a job a child can do. (a) False (b) True
18. 18.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) yeast (c) sunlight (d) turmeric powder
20. 20.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it turns to sugar (c) it grows faster (d) the yeast is killed
21. 21.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
22. 22.True or false: take in water from soil is a job of the flower. (a) False (b) True
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
24. 24.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
25. 25.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
26. 26.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) yes, a new gas forms (c) it is only dissolving (d) no, nothing changes
27. 27.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) air from outside (c) carbon dioxide gas (d) smoke
28. 28.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it turns to bread (c) it shrinks to nothing (d) the balloon is bigger
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🍋 Which of these steps is a job a child can do? (a) writing the message (b) ironing the paper (c) plugging in the iron (d) cutting the lemon
31. 31.True or false: a small bottle is needed for the yeast balloon. (a) True (b) False
32. 32.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) dipping the cotton bud (d) putting the iron away
33. 33.🧺 Do we need yeast for the secret lemon message? (a) needed (b) not needed
34. 34.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) evaporating (d) sieving
35. 35.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) it glows in the dark (c) nothing at all (d) lots of fizzy bubbles
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) a funnel or spoon (c) an empty bottle (d) baking soda
37. 37.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a magnet (d) a balloon
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🔍 Which is the odd one out? (a) ironing the paper (b) dipping the cotton bud (c) plugging in the iron (d) putting the iron away

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