Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 395 · 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.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it turns yellow (c) it grows much faster (d) it grows very little
2. 2.🔍 Which is the odd one out? (a) water (b) sugar (c) salt (d) sunlight
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) yeast
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the kind of salt
6. 6.🔍 Which is the odd one out? (a) baking a cake (b) melting ice (c) cooking an egg (d) milk turning to curd
7. 7.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) food stored in the seed (c) the cotton wool (d) the air
8. 8.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) no, never (c) they turn to stones (d) yes, they sprout
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
13. 13.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) turmeric powder (c) a small bowl (d) moong seeds
14. 14.True or false: a tray for spills is needed for the fizzy balloon. (a) False (b) True
15. 15.⚖️ 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) amount of water drops (d) the kind of plant
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) yeast
17. 17.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) nothing at all (c) tiny insects (d) salt crystals
18. 18.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
19. 19.True or false: tea leaves from tea is done by filtering. (a) False (b) True
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
21. 21.⚖️ 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 size of the plant (d) the kind of plant
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same muddy water
23. 23.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a balloon (d) a spoon
25. 25.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) salt water (d) lemon juice
27. 27.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
28. 28.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) yeast (c) a small bowl (d) water
29. 29.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
30. 30.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they react (b) they float apart (c) they become magnets (d) they freeze
31. 31.🌱 Which of these is needed for a seed to sprout? (a) soil (b) water (c) sugar (d) sunlight
32. 32.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
33. 33.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
34. 34.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
35. 35.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) size of the balloon (c) the water temperature (d) the amount of water
37. 37.🧂 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) sugar (d) food colour
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) sunlight (c) a potted plant (d) a rubber band
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same

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