Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 704 · 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 is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) muddy water (d) a battery cell
2. 2.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) dissolving salt (d) milk turning to curd
3. 3.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
4. 4.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) a potted plant (d) a battery cell
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) how hard we shake (b) the cream temperature (c) time to make butter
6. 6.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a mirror (c) moong seeds (d) water
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the kind of balloon
8. 8.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) blue (c) brown (d) white
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a mirror (c) cold water to rinse (d) a jar with a tight lid
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
12. 12.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) vinegar (c) a mirror (d) baking soda
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) how dark the writing is (b) the ironing time (c) the iron setting (d) the same cotton bud
14. 14.True or false: a balloon is needed for the turmeric test. (a) True (b) False
15. 15.⚖️ 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 keep it the same (b) we measure it (c) we change it
16. 16.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) tamarind water (d) salt water
18. 18.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a bowl (c) a magnet (d) fresh cream
19. 19.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) turmeric powder
22. 22.True or false: give out water vapour is a job of the roots. (a) True (b) False
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a potted plant (c) a magnet (d) a clear plastic bag
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) water (d) a dropper or spoon
25. 25.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
26. 26.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) cooking oil (d) chalk powder
27. 27.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) a bowl (c) cold water to rinse (d) fresh cream
28. 28.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) plugging in the iron (b) cutting the lemon (c) putting the iron away (d) letting the paper dry
32. 32.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) tea leaves from tea
33. 33.True or false: sugar dissolves in water. (a) True (b) False
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) a clean glass (d) a funnel
35. 35.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) boiling hot (d) warm, not hot
37. 37.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) a funnel or spoon (c) a mirror (d) vinegar
38. 38.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
39. 39.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) cooking an egg (d) dissolving salt
40. 40.⚖️ 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) how hard we shake (d) time to make butter

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