Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 134 · 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.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) reading the message (c) cutting the lemon (d) plugging in the iron
2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the same cotton bud (c) the same paper (d) the iron setting
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) False (b) True
4. 4.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a mirror (c) a clear plastic bag (d) yeast
5. 5.True or false: letting the paper dry is a job a child can do. (a) False (b) True
6. 6.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they sprout faster (c) they do not sprout (d) they glow
7. 7.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on wet cotton (c) boiled seeds (d) wet seeds in the dark
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) warm water (d) a piece of string
9. 9.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
10. 10.True or false: sugar from sugar water is done by filtering. (a) False (b) True
11. 11.🫗 Which of these is done by handpicking? (a) small stones from dal (b) gravel from fine sand (c) chaff from wheat grain (d) salt from sea water
12. 12.🧂 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) sugar (d) baking soda
13. 13.🧺 Do we need fresh cream for making butter? (a) needed (b) not needed
14. 14.True or false: vinegar is an acid. (a) True (b) False
15. 15.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) size of the balloon (c) spoons of baking soda (d) the amount of vinegar
17. 17.🌱 Seeds need water, air and ___ to sprout. (a) warmth (b) soil (c) salt (d) sugar
18. 18.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
19. 19.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.🫧 Which of these is an acid? (a) salt water (b) orange juice (c) baking soda water (d) sugar water
21. 21.True or false: husk from rice grain is done by handpicking. (a) True (b) False
22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a comb (d) yeast
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is the one thing we change. (a) False (b) True
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
27. 27.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
28. 28.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
29. 29.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) how many seeds sprout (c) wet or dry cotton (d) the same bowls
30. 30.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) soap solution (d) plain water
32. 32.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a bowl (c) a magnet (d) cold water to rinse
33. 33.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) ironing the paper (d) dipping the cotton bud
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a balloon (d) a mirror
35. 35.🪴 Which of these is a job of the flower? (a) hold the plant in soil (b) make seeds (c) take in water from soil (d) give out water vapour
36. 36.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
37. 37.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) wet seeds by a window (c) seeds in the freezer (d) boiled seeds
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🍋 Why does the lemon writing turn brown with heat? (a) the juice scorches first (b) heat adds colour (c) the iron is brown (d) paper turns lemony

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