Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 287 · 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.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) glucose powder (d) sand
2. 2.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
3. 3.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds on dry cotton (c) wet seeds in the dark (d) seeds in the freezer
4. 4.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) baking soda (c) a seed (d) a funnel or spoon
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a piece of string (d) yeast
7. 7.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
8. 8.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) food colour (d) sand
9. 9.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) a battery cell (d) a bowl
10. 10.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) cooking oil (d) baking soda
11. 11.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) sunlight (c) a magnet (d) yeast
12. 12.🔍 Which is the odd one out? (a) warm water (b) vinegar (c) time (d) sugar
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
14. 14.🫧 Which of these is a base? (a) orange juice (b) curd (c) soap solution (d) sugar water
15. 15.True or false: small stones from dal is done by handpicking. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) curd (b) lemon juice (c) detergent water (d) orange juice
17. 17.🫗 Which of these is done by filtering? (a) bad grains from rice (b) bran from wheat flour (c) tea leaves from tea (d) chaff from wheat grain
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
21. 21.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) size of the balloon
23. 23.True or false: an adult with an iron is not needed for the secret lemon message. (a) True (b) False
24. 24.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a small bowl (c) a few days (d) yeast
25. 25.True or false: baking soda water is an acid. (a) False (b) True
26. 26.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) melting butter (d) browning lemon ink
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) sunlight (d) a battery cell
28. 28.True or false: carry water upward is a job of the stem. (a) False (b) True
29. 29.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) vinegar (d) a mirror
30. 30.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) baking a cake (d) dissolving salt
31. 31.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Do we need sugar for the fizzy balloon? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) turmeric powder (d) soap solution
34. 34.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) sand and pebbles (d) muddy water
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) cotton wool (c) a small bowl (d) a few days
38. 38.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) flower (c) stem (d) roots
39. 39.True or false: make food in sunlight is a job of the leaves. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it

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