Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 72 · 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.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a small bowl (c) a battery cell (d) cotton wool
2. 2.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) water (d) a battery cell
5. 5.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) turmeric powder (c) sugar (d) a mirror
6. 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) a potted plant (d) yeast
7. 7.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so cream does not spill (c) so it gets hot (d) so air gets out
8. 8.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
9. 9.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) both the same (d) the hot sunny day
10. 10.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
11. 11.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) plain water (d) baking soda water
12. 12.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) writing stays faint (c) it gets darker (d) the paper floats
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
15. 15.⚖️ 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) the size of the plant (b) sun or shade (c) the time we wait (d) the same kind of bag
16. 16.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting butter (d) baking a cake
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) sugar (c) baking soda (d) an empty bottle
18. 18.True or false: plain water is an acid. (a) False (b) True
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
20. 20.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) white (c) green (d) brown
21. 21.🧺 Do we need a comb for the fizzy balloon? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) a mirror (c) lemon juice (d) white paper
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
24. 24.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) a mirror (c) a clear plastic bag (d) a magnet
25. 25.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
26. 26.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
27. 27.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) muddy water (d) turmeric powder
31. 31.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) dissolving salt (d) browning lemon ink
32. 32.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) plain water (d) tamarind water
33. 33.True or false: a bowl is not needed for making butter. (a) True (b) False
34. 34.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a battery cell (c) warm water (d) a small bottle
35. 35.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) make seeds (c) hold the plant in soil (d) make food in sunlight
36. 36.True or false: soap solution keeps turmeric yellow. (a) False (b) True
37. 37.⚖️ 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 filter material (c) the amount poured (d) the same glass
38. 38.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) an adult with an iron (c) a cotton bud (d) a battery cell
39. 39.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the same bowls (c) wet or dry cotton

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