Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 158 · 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.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a thorn (c) a fruit (d) a flower
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the kind of balloon (b) spoons of baking soda (c) size of the balloon (d) the amount of vinegar
3. 3.True or false: a comb is needed for the turmeric test. (a) False (b) True
4. 4.True or false: a timer is needed for making butter. (a) False (b) True
5. 5.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a balloon (d) a piece of string
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a spoon (d) yeast
8. 8.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
9. 9.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) the balloon bursts (c) it turns to honey (d) a huge eruption
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a potted plant (c) a rubber band (d) sunlight
12. 12.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) any child (c) only an adult (d) the youngest child
13. 13.True or false: ironing the paper is a job a child can do. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) sunlight (b) sugar (c) soil (d) air
15. 15.True or false: a balloon is needed for the secret lemon message. (a) False (b) True
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
17. 17.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) how many seeds sprout (b) the same bowls (c) the same place (d) wet or dry cotton
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
20. 20.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) lemon juice (c) a mirror (d) white paper
22. 22.🧺 Do we need moong seeds for sprouting seeds? (a) needed (b) not needed
23. 23.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) put it in your mouth (c) pour it down the sink (d) throw it at a wall
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
25. 25.🔮 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
26. 26.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) a magnet (d) a jar with a tight lid
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of water
28. 28.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a funnel or spoon (c) a magnet (d) a tray for spills
29. 29.🔍 Which is the odd one out? (a) air (b) sugar (c) water (d) warmth
30. 30.True or false: time is something yeast needs. (a) True (b) False
31. 31.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
32. 32.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a balloon (d) a dropper or spoon
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) sand and pebbles
35. 35.🫗 How do we separate bran from wheat flour? (a) handpicking (b) filtering (c) evaporating (d) sieving
36. 36.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is what we measure. (a) False (b) True
38. 38.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) detergent water (d) lemon juice
40. 40.True or false: dissolving salt is a change that can be undone. (a) True (b) False

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