Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 326 · 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 making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) fresh cream (d) a balloon
2. 2.🌱 Why do the seeds on dry cotton not sprout? (a) they have no soil (b) they are too wet (c) they have no water (d) they have no salt
3. 3.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) very little fizzing (c) the balloon bursts (d) it turns to honey
4. 4.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the roots (c) the fruits (d) the flowers
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
6. 6.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) a funnel (d) cotton or cloth
8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
10. 10.True or false: writing the message is a job for an adult. (a) True (b) False
11. 11.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) moong seeds (c) water (d) a mirror
12. 12.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) bright red (c) dark green (d) pale yellow
13. 13.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a mirror (d) a shallow dish
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
16. 16.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) evaporating
17. 17.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) carry water upward (c) take in water from soil (d) give out water vapour
18. 18.⚖️ 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) sun or shade (b) amount of water drops (c) the kind of plant
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) False (b) True
20. 20.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
21. 21.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) sunlight (c) a clear plastic bag (d) a potted plant
23. 23.⚖️ 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 same kind of bag
24. 24.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) it shrinks (c) there is no change (d) it grows bigger
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) white paper (c) a small bowl (d) turmeric powder
26. 26.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) husk from rice grain (c) bran from wheat flour (d) salt from sea water
27. 27.🧺 Do we need a jar with a tight lid for making butter? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) white paper strips (d) soap solution
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
30. 30.True or false: water is not needed for the turmeric test. (a) True (b) False
31. 31.True or false: soap solution is neutral. (a) True (b) False
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the size of the plant (b) amount of water drops (c) sun or shade (d) the kind of plant
33. 33.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) a balloon (c) a comb (d) turmeric powder
34. 34.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
35. 35.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) it turned into air (c) dry juice is see-through (d) the ink is magnetic
36. 36.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
37. 37.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
38. 38.True or false: curd is a base. (a) True (b) False
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we keep it the same (c) we measure it

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