Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 527 · 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.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
2. 2.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) blue words (c) almost nothing (d) dark brown words
3. 3.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) dissolving salt (d) baking a cake
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
5. 5.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
6. 6.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) white (c) green (d) brown
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) spoons of baking soda (c) the amount of vinegar
8. 8.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a mirror (c) a few days (d) a small bowl
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same glass (c) how clear the water is (d) the amount poured
11. 11.True or false: letting the paper dry is a job a child can do. (a) True (b) False
12. 12.🧺 Do we need fresh cream for making butter? (a) not needed (b) needed
13. 13.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) they melt (d) no, never
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) dry juice is see-through (c) the ink is magnetic (d) it turned into air
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.🧺 Which of these is not needed for making butter? (a) a mirror (b) a bowl (c) fresh cream (d) a timer
18. 18.True or false: a comb is needed for the yeast balloon. (a) False (b) True
19. 19.🪴 Which of these is a job of the roots? (a) hold up the leaves (b) make food in sunlight (c) make seeds (d) hold the plant in soil
20. 20.True or false: plain water is neutral. (a) True (b) False
21. 21.True or false: lemon juice is not needed for the secret lemon message. (a) True (b) False
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is kept the same. (a) False (b) True
23. 23.🧺 Do we need a magnet for the secret lemon message? (a) needed (b) not needed
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the filter adds soap (d) the water evaporates
27. 27.True or false: sugar water is neutral. (a) False (b) True
28. 28.⚖️ 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) amount of water drops (b) the size of the plant (c) the same kind of bag (d) the time we wait
29. 29.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
30. 30.True or false: putting the iron away is a job a child can do. (a) True (b) False
31. 31.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
32. 32.🪴 Which of these is a job of the flower? (a) make seeds (b) hold the plant in soil (c) hold up the leaves (d) carry water upward
33. 33.🔍 Which is the odd one out? (a) soil (b) sugar (c) warmth (d) sunlight
34. 34.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
35. 35.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) baking a cake (d) dissolving salt
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a piece of string (d) a shallow dish
37. 37.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) vinegar (c) a magnet (d) a rubber band
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) hold up the leaves (c) give out water vapour (d) carry water upward
40. 40.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we keep it the same (c) we measure it

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