Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 1 · 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 cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) the amount poured (d) how clear the water is
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a jar with a tight lid (c) fresh cream (d) a timer
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) it turns to honey (c) the balloon bursts (d) very little fizzing
5. 5.⚖️ 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 amount of salt (c) the amount of water (d) sunny or shady place
6. 6.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) sugar (d) baking soda
7. 7.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) no, never (d) they melt
8. 8.True or false: water is not needed for sprouting seeds. (a) True (b) False
9. 9.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
10. 10.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) baking a cake (c) melting ice (d) melting butter
11. 11.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) yeast (c) sunlight (d) turmeric powder
12. 12.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) soap solution (d) baking soda water
14. 14.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
15. 15.🧺 Which of these is needed for the leafy bag test? (a) a clear plastic bag (b) a battery cell (c) a mirror (d) yeast
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
17. 17.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
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.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows much faster (c) it grows very little (d) it bursts at once
20. 20.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it takes much longer (c) it makes salt (d) it turns pink
21. 21.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
24. 24.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
25. 25.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) turmeric powder
27. 27.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) yeast (d) a potted plant
30. 30.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) gravel from fine sand (c) tea leaves from tea (d) small stones from dal
31. 31.🫗 Which of these is done by sieving? (a) bad grains from rice (b) husk from rice grain (c) mud from water (d) bran from wheat flour
32. 32.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) size of the balloon (c) the amount of yeast
33. 33.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
34. 34.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) an empty bottle (d) a funnel or spoon
35. 35.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a few days (c) yeast (d) moong seeds
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) lemon juice (d) a comb
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) yeast
39. 39.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a magnet (d) muddy water

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