Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 930 · 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.⚖️ 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) the same kind of bag (b) the time we wait (c) the kind of plant (d) amount of water drops
2. 2.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) water (d) a comb
3. 3.True or false: baking a cake is a change that can be undone. (a) False (b) True
4. 4.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
5. 5.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) both the same (d) the hot sunny day
6. 6.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
8. 8.🫧 Which of these is a base? (a) sugar water (b) curd (c) soap solution (d) orange juice
9. 9.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a mirror (c) white paper (d) yeast
10. 10.True or false: moong seeds is not needed for sprouting seeds. (a) True (b) False
11. 11.📘 What is yeast? (a) a tiny living fungus (b) a kind of sugar (c) a kind of stone (d) a kind of salt
12. 12.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
13. 13.🪴 Which part of a plant does this job: carry water upward? (a) roots (b) leaves (c) flower (d) stem
14. 14.True or false: rusting iron is a change that can be undone. (a) True (b) False
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the same glass (c) the amount poured (d) the filter material
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the same bottles (c) the amount of water (d) the amount of sugar
18. 18.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the filter material (d) the amount poured
20. 20.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) melting ice (d) rusting iron
22. 22.True or false: lemon juice is needed for the secret lemon message. (a) False (b) True
23. 23.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) cooking oil (d) food colour
25. 25.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) steam (d) carbon dioxide gas
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) True (b) False
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a mirror (d) warm water
28. 28.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Which of these is not needed for making butter? (a) turmeric powder (b) fresh cream (c) a jar with a tight lid (d) cold water to rinse
30. 30.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) it turns to cheese (c) no butter forms (d) more butter forms
31. 31.🫗 Which of these is done by winnowing? (a) mud from water (b) bran from wheat flour (c) small stones from dal (d) husk from rice grain
32. 32.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) sugar (c) a magnet (d) a mirror
33. 33.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
34. 34.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
35. 35.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a potted plant (c) yeast (d) a clear plastic bag
36. 36.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
38. 38.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) a battery cell
40. 40.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it

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