Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 650 · 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 a small bowl for the secret lemon message? (a) not needed (b) needed
2. 2.🌱 Which of these does not sprout? (a) seeds on dry cotton (b) seeds on wet cotton (c) wet seeds in the dark (d) wet seeds by a window
3. 3.🪴 Which of these is a job of the flower? (a) make food in sunlight (b) hold the plant in soil (c) carry water upward (d) make seeds
4. 4.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
5. 5.🫧 Which of these is a base? (a) plain water (b) salt water (c) lemon juice (d) baking soda water
6. 6.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) warm water (d) a shallow dish
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) muddy water (d) cotton or cloth
10. 10.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) yes, they sprout (c) no, never (d) they melt
11. 11.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) skip washing
12. 12.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) yeast (d) turmeric powder
14. 14.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
15. 15.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) rub it hard (d) add baking soda
16. 16.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is the one thing we change. (a) True (b) False
17. 17.True or false: cold water to rinse is needed for making butter. (a) True (b) False
18. 18.🧺 Which of these is not needed for the fizzy balloon? (a) a mirror (b) a tray for spills (c) vinegar (d) baking soda
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) a magnet (d) a tray for spills
21. 21.True or false: hold up the leaves is a job of the roots. (a) True (b) False
22. 22.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a bowl (c) a balloon (d) fresh cream
23. 23.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) a balloon (c) a magnet (d) a cotton bud
24. 24.🧺 Which of these is not needed for the leafy bag test? (a) turmeric powder (b) a clear plastic bag (c) sunlight (d) a potted plant
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a battery cell
27. 27.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: writing the message is a job for an adult. (a) True (b) False
29. 29.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
31. 31.True or false: sugar water is an acid. (a) False (b) True
32. 32.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
33. 33.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) warm water (d) a mirror
34. 34.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
36. 36.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
37. 37.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a paper clip (c) a comb (d) a small bottle
38. 38.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
39. 39.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
40. 40.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown

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