Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 609 · 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) food colour (b) sugar (c) chalk powder (d) baking soda
2. 2.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) warm water (c) a battery cell (d) a mirror
3. 3.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
4. 4.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is the one thing we change. (a) False (b) True
7. 7.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the roots (c) the flowers (d) the leaves
8. 8.🍞 Which of these is something yeast needs? (a) a magnet (b) vinegar (c) warm water (d) salt
9. 9.🔍 Which is the odd one out? (a) folding paper (b) cooking an egg (c) dissolving salt (d) melting ice
10. 10.🪴 Which of these is a job of the flower? (a) give out water vapour (b) make seeds (c) make food in sunlight (d) carry water upward
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
12. 12.📘 What do we call a seed starting to grow? (a) pollination (b) condensation (c) evaporation (d) germination
13. 13.True or false: take in water from soil is a job of the roots. (a) True (b) False
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.⚖️ 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) amount of water drops (b) sun or shade (c) the same kind of bag (d) the size of the plant
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) turmeric powder (d) warm water
18. 18.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a battery cell (c) an adult with an iron (d) a balloon
19. 19.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
20. 20.🫧 Which of these is an acid? (a) salt water (b) lemon juice (c) sugar water (d) soap solution
21. 21.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.True or false: bad grains from rice is done by handpicking. (a) False (b) True
23. 23.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a comb (c) dry yeast (d) a balloon
24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) time to make butter (c) the amount of cream
26. 26.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the same bowls (c) wet or dry cotton
27. 27.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they sprout faster (b) they grow fruit (c) they glow (d) they do not sprout
28. 28.🍞 Which of these is something yeast does not need? (a) a magnet (b) time (c) sugar (d) warm water
29. 29.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) sugar water (d) plain water
30. 30.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
31. 31.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) melting ice (d) cooking an egg
33. 33.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a potted plant (c) a clear plastic bag (d) a rubber band
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) white paper (c) a battery cell (d) lemon juice
35. 35.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the same jar (b) the cream temperature (c) time to make butter
37. 37.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a balloon (d) yeast
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a mirror (d) cotton or cloth
39. 39.🍞 Which of these is something yeast needs? (a) sugar (b) vinegar (c) sunlight (d) salt
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) soap solution (d) a dropper or spoon

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