Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 21 · 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 the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a funnel (d) a clean glass
2. 2.⚖️ 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) sun or shade (b) amount of water drops (c) the same kind of bag (d) the kind of plant
3. 3.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
5. 5.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
6. 6.True or false: yeast is needed for the muddy water filter. (a) False (b) True
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the number of drops
10. 10.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is magnetic (c) it is sticky (d) it is cold
11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
12. 12.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) dissolving salt (c) melting butter (d) folding paper
13. 13.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) yeast (b) a few hours (c) a clear plastic bag (d) sunlight
15. 15.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
16. 16.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it grows faster (b) it glows (c) it turns to sugar (d) the yeast is killed
17. 17.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
18. 18.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
19. 19.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a mirror (c) a seed (d) a funnel or spoon
20. 20.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) putting the iron away (b) cutting the lemon (c) reading the message (d) ironing the paper
22. 22.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
23. 23.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
24. 24.True or false: mud from water is done by handpicking. (a) True (b) False
25. 25.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
26. 26.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a bowl (c) cold water to rinse (d) a magnet
28. 28.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) putting the iron away (c) cutting the lemon (d) reading the message
29. 29.🍞 Which of these is something yeast does not need? (a) warm water (b) a magnet (c) sugar (d) time
30. 30.True or false: a magnet is something yeast does not need. (a) True (b) False
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
32. 32.🫧 Which of these is neutral? (a) detergent water (b) vinegar (c) curd (d) plain water
33. 33.True or false: glucose powder dissolves in water. (a) True (b) False
34. 34.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) an adult with an iron (d) a mirror
35. 35.True or false: warm water is something yeast needs. (a) True (b) False
36. 36.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
37. 37.⚖️ 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) the kind of plant (b) the size of the plant (c) sun or shade (d) amount of water drops
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
39. 39.True or false: yeast is needed for the secret lemon message. (a) True (b) False
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids