Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 998 · 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 baking soda for the fizzy balloon? (a) not needed (b) needed
2. 2.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) no, nothing changes (c) it is only melting (d) yes, a new gas forms
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) yeast (c) a spoon (d) a piece of string
4. 4.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
5. 5.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) sunlight (b) time (c) salt (d) a magnet
7. 7.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) vinegar (c) a clear plastic bag (d) a magnet
8. 8.🧺 Do we need fresh cream for making butter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
13. 13.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) leaves (c) roots (d) stem
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) cutting the lemon (b) dipping the cotton bud (c) ironing the paper (d) plugging in the iron
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
17. 17.🫧 Which of these is neutral? (a) plain water (b) lemon juice (c) orange juice (d) curd
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
20. 20.True or false: a seed is needed for the fizzy balloon. (a) False (b) True
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the same dish (c) days to see crystals
22. 22.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) a mirror (d) a balloon
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
24. 24.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) skip washing (d) rub your eyes
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) vinegar (c) baking soda (d) sugar
27. 27.🧺 Which of these is needed for sprouting seeds? (a) yeast (b) a few days (c) a balloon (d) turmeric powder
28. 28.🪴 Which of these is a job of the leaves? (a) make food in sunlight (b) make seeds (c) take in water from soil (d) carry water upward
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
30. 30.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) vinegar (d) salt water
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a funnel (d) yeast
33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a comb (c) a dropper or spoon (d) lemon juice
34. 34.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to wash dishes (c) to clean floors (d) to colour rice
35. 35.True or false: a mirror is needed for the leafy bag test. (a) False (b) True
36. 36.True or false: a timer is needed for making butter. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) ironing the paper (b) reading the message (c) cutting the lemon (d) plugging in the iron
38. 38.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so air gets out (c) so it turns yellow (d) so cream does not spill
39. 39.True or false: ironing the paper is a job a child can do. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) sawdust (d) sand

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