Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 328 · 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.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a balloon (d) white paper strips
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a mirror (c) a piece of string (d) a shallow dish
4. 4.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
5. 5.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) putting the iron away (c) letting the paper dry (d) plugging in the iron
6. 6.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they grow fruit (c) they sprout faster (d) they glow
7. 7.🔍 Which is the odd one out? (a) warmth (b) air (c) water (d) sunlight
8. 8.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the turmeric test? (a) yeast (b) soap solution (c) a battery cell (d) a balloon
10. 10.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
11. 11.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) how many seeds sprout (b) the same place (c) the same bowls (d) wet or dry cotton
12. 12.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
13. 13.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) milk turning to curd (d) freezing water
14. 14.True or false: dry yeast is not needed for the yeast balloon. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) sugar water (d) soap solution
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
17. 17.True or false: mud from water is done by filtering. (a) False (b) True
18. 18.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) no, it stays brown (c) yes, if shaken (d) yes, if cooled
21. 21.⚖️ 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) size of the balloon (b) the same bottles (c) the water temperature (d) the amount of water
22. 22.True or false: a magnet is not needed for the leafy bag test. (a) False (b) True
23. 23.🪴 Which of these is a job of the leaves? (a) give out water vapour (b) hold up the leaves (c) make seeds (d) take in water from soil
24. 24.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
25. 25.⚖️ 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) the same dish (c) sunny or shady place
26. 26.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) cold water to rinse (c) a jar with a tight lid (d) a battery cell
27. 27.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) warm, not hot (d) very salty
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a magnet (d) a clean glass
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) a mirror (d) a jar with a tight lid
30. 30.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) dry yeast (c) sugar (d) a small bottle
32. 32.🫧 Which of these is a base? (a) detergent water (b) plain water (c) vinegar (d) orange juice
33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
34. 34.🔍 Which is the odd one out? (a) writing the message (b) ironing the paper (c) letting the paper dry (d) reading the message
35. 35.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
36. 36.True or false: sugar water is a base. (a) True (b) False
37. 37.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) water (d) a comb
38. 38.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) detergent water (d) orange juice
39. 39.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) yeast (c) a small bowl (d) moong seeds
40. 40.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a magnet (c) an adult with an iron (d) white paper

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