Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 256 · 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 cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) the amount of cream (c) the same jar (d) how hard we shake
2. 2.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) False (b) True
3. 3.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
4. 4.True or false: a comb is not needed for the turmeric test. (a) False (b) True
5. 5.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) baking soda (c) a seed (d) a comb
6. 6.True or false: warm water is needed for growing salt crystals. (a) True (b) False
7. 7.True or false: warm water is something yeast does not need. (a) False (b) True
8. 8.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
9. 9.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it turns yellow (c) it grows very little (d) it bursts at once
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the kind of balloon (c) the same bottle (d) size of the balloon
11. 11.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the hot sunny day (c) the cool cloudy day (d) both the same
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is the one thing we change. (a) False (b) True
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
14. 14.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it can burn skin (d) it is magnetic
15. 15.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) True (b) False
16. 16.True or false: a balloon is not needed for sprouting seeds. (a) False (b) True
17. 17.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) plugging in the iron (c) dipping the cotton bud (d) cutting the lemon
18. 18.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) fat bits stick together (c) the lid is warm (d) the jar adds butter
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
20. 20.🫗 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
21. 21.🔍 Which is the odd one out? (a) air (b) soil (c) warmth (d) water
22. 22.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) True (b) False
23. 23.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) plain water (d) sugar water
25. 25.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the fruits (c) the flowers (d) the leaves
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a mirror
27. 27.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) a balloon (c) turmeric powder (d) a small bowl
28. 28.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) lemon juice (c) a magnet (d) yeast
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) sugar (d) a tray for spills
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same paper
33. 33.True or false: baking soda water is a base. (a) False (b) True
34. 34.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) False (b) True
37. 37.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) freezing water (d) milk turning to curd
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is the one thing we change. (a) True (b) False
39. 39.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
40. 40.True or false: sugar is not needed for the yeast balloon. (a) False (b) True

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