Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 439 · 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 needed for making butter? (a) yeast (b) a timer (c) a magnet (d) turmeric powder
2. 2.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) sunlight (d) warm water
3. 3.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) dissolving salt (b) melting butter (c) folding paper (d) browning lemon ink
6. 6.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
8. 8.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
9. 9.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) freezing water (d) browning lemon ink
10. 10.🫧 Which of these is a base? (a) curd (b) plain water (c) soap solution (d) lemon juice
11. 11.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
12. 12.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it grows bigger (c) there is no change (d) it turns blue
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) False (b) True
14. 14.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a battery cell (c) moong seeds (d) water
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) yeast (c) turmeric powder (d) a magnet
16. 16.True or false: turmeric powder is needed for the secret lemon message. (a) True (b) False
17. 17.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
18. 18.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
19. 19.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
20. 20.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
21. 21.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) baking soda (c) a mirror (d) a comb
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
24. 24.🧺 Which of these is not needed for the fizzy balloon? (a) vinegar (b) a balloon (c) a funnel or spoon (d) a mirror
25. 25.⚖️ 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) the iron setting (c) how dark the writing is
26. 26.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
27. 27.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) put it in your mouth (c) pour it down the sink (d) keep it for a month
28. 28.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) table salt (d) chalk powder
29. 29.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a small bottle (c) a paper clip (d) a battery cell
30. 30.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) yeast (d) lemon juice
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
32. 32.🧺 Do we need a magnet for sprouting seeds? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) a mirror (c) turmeric powder (d) water
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
35. 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) the time we wait (c) the size of the plant (d) sun or shade
36. 36.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) almost nothing (d) dark brown words
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the kind of salt (b) days to see crystals (c) sunny or shady place (d) the same dish
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a magnet (d) muddy water
39. 39.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
40. 40.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed

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