Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 955 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) turmeric powder (c) a piece of string (d) a spoon
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) white paper strips (d) turmeric powder
3. 3.True or false: plugging in the iron is a job a child can do. (a) True (b) False
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the number of drops
5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a clear plastic bag (c) a few hours (d) a magnet
7. 7.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) False (b) True
8. 8.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
9. 9.True or false: take in water from soil is a job of the roots. (a) False (b) True
10. 10.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) True (b) False
11. 11.True or false: seeds in the freezer sprouts in a few days. (a) False (b) True
12. 12.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
13. 13.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) False (b) True
14. 14.True or false: a balloon is needed for sprouting seeds. (a) True (b) False
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is kept the same. (a) True (b) False
16. 16.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is kept the same. (a) True (b) False
17. 17.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) vinegar (d) curd
18. 18.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) a magnet (d) warm water
19. 19.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
22. 22.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) yeast (c) a funnel (d) sand and pebbles
24. 24.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
25. 25.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
26. 26.True or false: putting the iron away is a job a child can do. (a) True (b) False
27. 27.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) turmeric powder (d) a cotton bud
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is the one thing we change. (a) False (b) True
30. 30.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) rusting iron (d) dissolving salt
31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) turmeric powder (d) a balloon
32. 32.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) lemon juice (d) detergent water
33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) the iron setting (c) how dark the writing is
34. 34.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) boiling hot (d) warm, not hot
35. 35.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
36. 36.True or false: a balloon is needed for making butter. (a) True (b) False
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🔍 Which is the odd one out? (a) time (b) salt (c) vinegar (d) sunlight
39. 39.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) the hot sunny day (c) neither of them (d) both the same
40. 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) vinegar (d) a seed

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