Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 493 · 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.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) sieving
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
4. 4.True or false: a tray for spills is not needed for the fizzy balloon. (a) True (b) False
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) lemon juice (d) white paper strips
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) False (b) True
7. 7.True or false: sugar dissolves in water. (a) False (b) True
8. 8.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
9. 9.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
10. 10.🫗 How do we separate sugar from sugar water? (a) sieving (b) winnowing (c) evaporating (d) filtering
11. 11.True or false: turmeric powder is needed for the yeast balloon. (a) False (b) True
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) spoons of baking soda (c) the kind of balloon (d) the same bottle
13. 13.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
14. 14.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) soap solution (d) water
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a shallow dish (d) turmeric powder
18. 18.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it is too big (c) it can block breathing (d) it changes colour
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) muddy water (d) a mirror
20. 20.🔮 The fizzing stops after a while. Why? (a) an ingredient ran out (b) the balloon got cold (c) the bottle got tired (d) the gas froze
21. 21.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) vinegar (d) a comb
22. 22.🔍 Which is the odd one out? (a) dissolving salt (b) melting butter (c) rusting iron (d) melting ice
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of yeast
24. 24.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
25. 25.True or false: water is needed for the turmeric test. (a) True (b) False
26. 26.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) nothing at all (c) it turns to ice (d) it glows in the dark
27. 27.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) sugar from sugar water
29. 29.True or false: a battery cell is not needed for making butter. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) turmeric powder (c) a timer (d) fresh cream
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) False (b) True
35. 35.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) a clean glass (d) muddy water
37. 37.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) ironing the paper (c) writing the message (d) reading the message
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
40. 40.🧺 Which of these is not needed for the secret lemon message? (a) a magnet (b) an adult with an iron (c) a cotton bud (d) a small bowl

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