Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 600 · 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 jar with a tight lid for making butter? (a) needed (b) not needed
2. 2.🌱 Will these sprout: boiled seeds? (a) does not sprout (b) sprouts
3. 3.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🔍 Which is the odd one out? (a) time (b) sugar (c) warm water (d) salt
5. 5.True or false: bran from wheat flour is done by sieving. (a) True (b) False
6. 6.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
8. 8.🫗 How do we separate bran from wheat flour? (a) evaporating (b) handpicking (c) winnowing (d) sieving
9. 9.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) almost nothing (c) a rainbow (d) blue words
10. 10.🍋 What colour does the lemon writing turn when an adult warms it? (a) white (b) blue (c) brown (d) green
11. 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) nothing at all (c) salt crystals (d) tiny water drops
12. 12.🔍 Which is the odd one out? (a) milk turning to curd (b) browning lemon ink (c) folding paper (d) baking a cake
13. 13.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
14. 14.True or false: a magnet is something yeast needs. (a) True (b) False
15. 15.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the same bowls
16. 16.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) a spoon (d) warm water
19. 19.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) vinegar (d) soap solution
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
21. 21.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a magnet (c) fresh cream (d) a timer
22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
23. 23.True or false: yeast is needed for the turmeric test. (a) False (b) True
24. 24.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
25. 25.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) writing stays faint (c) writing turns green (d) the paper floats
26. 26.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) flower (c) roots (d) leaves
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
29. 29.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
30. 30.🍞 Why do we add sugar to the yeast? (a) to colour it (b) to make it sweet (c) it is food for yeast (d) to make it heavy
31. 31.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) carbon dioxide gas (c) air from outside (d) steam
32. 32.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) carry water upward (c) take in water from soil (d) give out water vapour
34. 34.🛟 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
35. 35.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) water (d) a mirror
36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🔍 Which is the odd one out? (a) a magnet (b) salt (c) vinegar (d) warm water
38. 38.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a magnet (b) warm water (c) sugar (d) time
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) a piece of string

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