Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 57 · 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 mirror for the muddy water filter? (a) needed (b) not needed
2. 2.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
3. 3.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
4. 4.True or false: bran from wheat flour is done by sieving. (a) False (b) True
5. 5.True or false: sugar is needed for the fizzy balloon. (a) False (b) True
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) sun or shade (b) the same kind of bag (c) the kind of plant (d) the time we wait
7. 7.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) an adult with an iron (c) yeast (d) white paper
8. 8.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) sugar (d) dry yeast
9. 9.True or false: a battery cell is not needed for the secret lemon message. (a) True (b) False
10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
11. 11.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a few hours (c) sunlight (d) a mirror
12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
13. 13.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) a timer (c) a jar with a tight lid (d) cold water to rinse
14. 14.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
15. 15.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) leaves (c) flower (d) stem
16. 16.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
17. 17.True or false: lemon juice is an acid. (a) True (b) False
18. 18.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is the one thing we change. (a) True (b) False
20. 20.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sawdust (d) sugar
21. 21.🪴 Which part of a plant does this job: hold the plant in soil? (a) roots (b) leaves (c) flower (d) stem
22. 22.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a bowl (c) a mirror (d) a balloon
23. 23.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) plain water (d) sugar water
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a magnet
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.True or false: a mirror is needed for the turmeric test. (a) True (b) False
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: reading the message is a job for an adult. (a) True (b) False
29. 29.🌱 What comes out of a moong seed first when it sprouts? (a) a flower (b) a tiny root (c) a fruit (d) a thorn
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) muddy water (d) a clean glass
31. 31.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) food stored in the seed (c) the air (d) the cotton wool
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the same paper (b) how dark the writing is (c) the kind of juice
33. 33.True or false: food colour does not dissolve in water. (a) True (b) False
34. 34.True or false: a battery cell is needed for the yeast balloon. (a) False (b) True
35. 35.🫧 Which of these is neutral? (a) tamarind water (b) baking soda water (c) soap solution (d) sugar water
36. 36.True or false: cutting the lemon is a job a child can do. (a) True (b) False
37. 37.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
38. 38.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
39. 39.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) it turns to bread (c) the balloon is bigger (d) the balloon is smaller
40. 40.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a mirror (b) a few days (c) a small bowl (d) cotton wool

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