Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 693 · 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.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
2. 2.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) winnowing (d) handpicking
3. 3.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
4. 4.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
6. 6.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it gets hot (c) so it turns yellow (d) so cream does not spill
7. 7.🪴 Which of these is a job of the stem? (a) take in water from soil (b) make seeds (c) give out water vapour (d) hold up the leaves
8. 8.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) powder (c) clear water (d) thick whipped cream
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the same bottle (c) spoons of baking soda (d) the amount of vinegar
11. 11.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
12. 12.True or false: putting the iron away is a job for an adult. (a) False (b) True
13. 13.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
14. 14.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
17. 17.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) roots (c) leaves (d) stem
18. 18.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is salty (d) clear water is sweet
19. 19.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the same bowls (c) how many seeds sprout
20. 20.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) seal it in a glass jar (d) shake it near your face
21. 21.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) whoever is fastest (c) the youngest child (d) only an adult
22. 22.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a balloon (c) cold water to rinse (d) a jar with a tight lid
23. 23.🌱 Which of these is needed for a seed to sprout? (a) salt (b) sunlight (c) sugar (d) warmth
24. 24.🔍 Which is the odd one out? (a) plugging in the iron (b) ironing the paper (c) reading the message (d) cutting the lemon
25. 25.True or false: turmeric powder is not needed for sprouting seeds. (a) True (b) False
26. 26.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
28. 28.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) browning lemon ink (d) milk turning to curd
29. 29.⚖️ 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) False (b) True
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🧺 Which of these is not needed for sprouting seeds? (a) a small bowl (b) water (c) moong seeds (d) yeast
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a magnet (b) a timer (c) a jar with a tight lid (d) fresh cream
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
34. 34.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
35. 35.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) winnowing (d) handpicking
36. 36.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
37. 37.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
38. 38.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
40. 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same

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