Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 976 · 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.🔍 Which is the odd one out? (a) ironing the paper (b) cutting the lemon (c) putting the iron away (d) letting the paper dry
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same funnel (c) how clear the water is
3. 3.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) salt water (d) sugar water
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) yeast (d) white paper strips
5. 5.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) roots (c) stem (d) leaves
6. 6.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) salt from sea water (c) small stones from dal (d) gravel from fine sand
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False
8. 8.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
11. 11.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting ice (c) dissolving salt (d) melting butter
12. 12.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a jar with a tight lid (c) fresh cream (d) turmeric powder
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
15. 15.🌱 Will these sprout: seeds on dry cotton? (a) does not sprout (b) sprouts
16. 16.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
18. 18.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) True (b) False
20. 20.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) flower (c) leaves (d) stem
21. 21.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
22. 22.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) a funnel or spoon (c) a balloon (d) a comb
23. 23.True or false: a mirror is needed for the fizzy balloon. (a) True (b) False
24. 24.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) baking soda (c) a tray for spills (d) a seed
25. 25.True or false: turmeric powder is needed for the secret lemon message. (a) True (b) False
26. 26.🍞 Which of these is something yeast does not need? (a) warm water (b) a magnet (c) sugar (d) time
27. 27.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) cooking an egg (b) melting butter (c) folding paper (d) dissolving salt
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the same bottle (d) size of the balloon
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) wet or dry cotton (c) the same place (d) the same bowls
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.🧺 Do we need a magnet for the fizzy balloon? (a) needed (b) not needed
34. 34.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
35. 35.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
36. 36.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on wet cotton (c) seeds on dry cotton (d) boiled seeds
37. 37.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the lid is warm (c) fat bits stick together (d) the jar adds butter
38. 38.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
40. 40.🔍 Which is the odd one out? (a) dipping the cotton bud (b) cutting the lemon (c) writing the message (d) letting the paper dry

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