Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 610 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
2. 2.🧺 Which of these is needed for making butter? (a) a balloon (b) turmeric powder (c) fresh cream (d) a battery cell
3. 3.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) folding paper (b) dissolving salt (c) freezing water (d) baking a cake
5. 5.True or false: a small bowl is not needed for sprouting seeds. (a) False (b) True
6. 6.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) a balloon (c) vinegar (d) baking soda
7. 7.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) never put seeds in mouth (c) feed them to pets (d) eat a few to check
8. 8.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) turmeric powder (d) muddy water
10. 10.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
11. 11.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
12. 12.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) boiling hot (d) warm, not hot
13. 13.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed
14. 14.🫗 How do we separate bran from wheat flour? (a) winnowing (b) sieving (c) filtering (d) handpicking
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
18. 18.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
19. 19.🧺 Do we need cold water to rinse for making butter? (a) not needed (b) needed
20. 20.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) turmeric powder (c) a paper clip (d) a magnet
22. 22.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
23. 23.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) it is only melting (c) yes, a new gas forms (d) no, nothing changes
24. 24.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) salt (d) a shallow dish
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a battery cell (d) sand and pebbles
28. 28.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) turmeric powder (c) a timer (d) cold water to rinse
30. 30.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the size of the plant (b) amount of water drops (c) sun or shade
32. 32.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) sugar (c) an empty bottle (d) vinegar
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) sun or shade (b) the time we wait (c) the size of the plant (d) the same kind of bag
34. 34.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a balloon (c) a jar with a tight lid (d) cold water to rinse
35. 35.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) a mirror (d) a timer
36. 36.🌱 What comes out of a moong seed first when it sprouts? (a) a thorn (b) a flower (c) a fruit (d) a tiny root
37. 37.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) time to make butter (c) the amount of cream
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: salt is needed for a seed to sprout. (a) False (b) True

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