Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 974 · 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.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) size of the balloon (b) the water temperature (c) the amount of yeast (d) the same bottles
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
4. 4.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a clear plastic bag (c) vinegar (d) a magnet
5. 5.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
7. 7.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) True (b) False
9. 9.🫧 Which of these is a base? (a) sugar water (b) soap solution (c) plain water (d) tamarind water
10. 10.True or false: a few days is not needed for sprouting seeds. (a) False (b) True
11. 11.True or false: seeds in the freezer sprouts in a few days. (a) False (b) True
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) the cream temperature (c) the amount of cream (d) time to make butter
14. 14.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
15. 15.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) warm water (d) a magnet
16. 16.🌱 Will these sprout: wet seeds by a window? (a) does not sprout (b) sprouts
17. 17.True or false: a magnet is needed for sprouting seeds. (a) False (b) True
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) put it in your mouth (d) keep it away from eyes
20. 20.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) letting the paper dry (c) ironing the paper (d) putting the iron away
21. 21.🔍 Which is the odd one out? (a) writing the message (b) dipping the cotton bud (c) reading the message (d) ironing the paper
22. 22.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
23. 23.True or false: detergent water is an acid. (a) True (b) False
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) a balloon (c) a tray for spills (d) a funnel or spoon
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) an empty bottle (c) baking soda (d) vinegar
26. 26.True or false: warm water is needed for growing salt crystals. (a) False (b) True
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
29. 29.🧺 Which of these is not needed for sprouting seeds? (a) a magnet (b) water (c) cotton wool (d) moong seeds
30. 30.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) rusting iron (d) melting ice
31. 31.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) leaves (c) flower (d) roots
32. 32.📘 What is yeast? (a) a kind of salt (b) a kind of sugar (c) a tiny living fungus (d) a kind of stone
33. 33.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
34. 34.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) a small bowl (c) water (d) a few days
35. 35.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) detergent water (d) lemon juice
37. 37.True or false: sugar is needed for the yeast balloon. (a) True (b) False
38. 38.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a funnel or spoon (c) a seed (d) an empty bottle
39. 39.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) a timer (c) a bowl (d) cold water to rinse

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