Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 883 · 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 is a plastic jar a good choice for shaking? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
2. 2.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧂 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) cooking oil (d) sugar
5. 5.⚖️ 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 change it (c) we measure it
6. 6.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a balloon (c) a seed (d) a battery cell
7. 7.True or false: salt is something yeast needs. (a) False (b) True
8. 8.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
9. 9.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
10. 10.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
11. 11.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) tea leaves from tea (c) sugar from sugar water (d) gravel from fine sand
12. 12.🌱 Which of these is needed for a seed to sprout? (a) salt (b) sugar (c) sunlight (d) water
13. 13.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) butter lumps (c) still runny cream (d) ghee
14. 14.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
15. 15.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) stomata (c) roots (d) veins
20. 20.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is what we measure. (a) True (b) False
23. 23.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sawdust (d) table salt
25. 25.True or false: tamarind water is an acid. (a) True (b) False
26. 26.True or false: a mirror is not needed for the leafy bag test. (a) True (b) False
27. 27.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) sugar (c) a funnel or spoon (d) baking soda
28. 28.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a few days (c) a mirror (d) moong seeds
32. 32.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) nothing at all (c) lots of fizzy bubbles (d) it turns to ice
33. 33.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) sugar (c) warm water (d) a small bottle
34. 34.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) make seeds (c) carry water upward (d) hold the plant in soil
35. 35.🧺 Which of these is needed for making butter? (a) yeast (b) a balloon (c) turmeric powder (d) a timer
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) detergent water (d) salt water
37. 37.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the kind of salt (c) the amount of salt (d) the amount of water
39. 39.🧺 Which of these is not needed for the leafy bag test? (a) turmeric powder (b) a potted plant (c) a few hours (d) a rubber band
40. 40.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) it is food for yeast (c) to colour it (d) to make it sweet

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