Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 321 · 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.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🔍 Which is the odd one out? (a) salt (b) soil (c) water (d) sunlight
4. 4.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) a small bottle (d) a comb
6. 6.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is kept the same. (a) True (b) False
7. 7.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) much less water (d) exactly the same
8. 8.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is sticky (c) it is magnetic (d) it is cold
9. 9.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a timer (c) yeast (d) fresh cream
10. 10.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) a cotton bud (d) yeast
11. 11.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) dissolving salt (d) cooking an egg
12. 12.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
13. 13.🧂 Which of these dissolves in water? (a) glucose powder (b) sawdust (c) cooking oil (d) chalk powder
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is what we measure. (a) True (b) False
16. 16.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
17. 17.⚖️ 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) amount of water drops (b) sun or shade (c) the size of the plant
18. 18.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) there is no change (c) it turns blue (d) it grows bigger
19. 19.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
20. 20.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
21. 21.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) salt (d) time
22. 22.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) cold water to rinse (c) a bowl (d) yeast
23. 23.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
24. 24.🧺 Do we need a battery cell for making butter? (a) not needed (b) needed
25. 25.True or false: cotton wool is not needed for sprouting seeds. (a) True (b) False
26. 26.True or false: water is needed for sprouting seeds. (a) True (b) False
27. 27.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) lemon juice (c) white paper (d) a balloon
29. 29.True or false: a seed is needed for the fizzy balloon. (a) True (b) False
30. 30.True or false: vinegar is something yeast needs. (a) True (b) False
31. 31.⚖️ 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
32. 32.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
34. 34.True or false: hold the plant in soil is a job of the stem. (a) True (b) False
35. 35.True or false: make food in sunlight is a job of the flower. (a) True (b) False
36. 36.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a clear plastic bag (c) sunlight (d) yeast
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they become magnets (c) they float apart (d) they react
39. 39.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a rubber band (c) a battery cell (d) a few hours
40. 40.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) freezing water (d) browning lemon ink

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