Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 770 · 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.True or false: water is not needed for a seed to sprout. (a) True (b) False
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
4. 4.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a cotton bud (d) a small bowl
6. 6.🔍 Which is the odd one out? (a) baking a cake (b) milk turning to curd (c) cooking an egg (d) melting butter
7. 7.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a balloon (c) a battery cell (d) a seed
8. 8.True or false: curd is a base. (a) False (b) True
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
10. 10.True or false: yeast is not needed for the secret lemon message. (a) True (b) False
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
12. 12.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
13. 13.True or false: baking soda water is neutral. (a) False (b) True
14. 14.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) yeast (c) moong seeds (d) cotton wool
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) turmeric powder (c) a potted plant (d) a rubber band
16. 16.🫧 Which of these is neutral? (a) orange juice (b) detergent water (c) vinegar (d) salt water
17. 17.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
18. 18.🧺 Do we need fresh cream for making butter? (a) not needed (b) needed
19. 19.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
20. 20.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to colour it (c) to make it sweet (d) to make it heavy
22. 22.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
23. 23.🍋 Which of these steps is a job for an adult? (a) reading the message (b) letting the paper dry (c) putting the iron away (d) dipping the cotton bud
24. 24.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
25. 25.🍞 Which of these is something yeast needs? (a) sugar (b) salt (c) sunlight (d) vinegar
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so cream does not spill (c) so it gets hot (d) so air gets out
28. 28.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) fresh cream (c) a jar with a tight lid (d) a mirror
30. 30.🫗 How do we separate husk from rice grain? (a) sieving (b) handpicking (c) evaporating (d) winnowing
31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) a battery cell (d) turmeric powder
32. 32.🍋 Secret message: who does this step — writing the message? (a) a child can do it (b) an adult does it
33. 33.🛟 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
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) turmeric powder (d) white paper strips
35. 35.True or false: plugging in the iron is a job for an adult. (a) True (b) False
36. 36.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a rubber band (c) a mirror (d) a battery cell
37. 37.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) a balloon (c) baking soda (d) a battery cell
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a rubber band (c) a mirror (d) a potted plant
39. 39.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) lots of fizzy bubbles (d) it turns to ice
40. 40.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) sawdust (d) baking soda

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