Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 834 · 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 for an adult? (a) letting the paper dry (b) ironing the paper (c) dipping the cotton bud (d) writing the message
2. 2.🫗 How do we separate gravel from fine sand? (a) handpicking (b) sieving (c) filtering (d) evaporating
3. 3.True or false: a cotton bud is needed for the secret lemon message. (a) False (b) True
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) vinegar (c) a mirror (d) a seed
5. 5.🧂 Which of these dissolves in water? (a) table salt (b) sand (c) chalk powder (d) cooking oil
6. 6.True or false: a clear plastic bag is needed for the leafy bag test. (a) False (b) True
7. 7.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
8. 8.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
9. 9.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
12. 12.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a comb (c) a small bottle (d) dry yeast
13. 13.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
14. 14.True or false: a battery cell is not needed for making butter. (a) True (b) False
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a balloon
17. 17.True or false: ironing the paper is a job a child can do. (a) False (b) True
18. 18.🧺 Do we need yeast for the secret lemon message? (a) not needed (b) needed
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) yeast
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) True (b) False
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
25. 25.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) it fills with soil (d) much less water
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) keep it for a month (d) throw it at a wall
28. 28.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a magnet (c) cold water to rinse (d) fresh cream
29. 29.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it turns yellow (c) so cream does not spill (d) so it gets hot
30. 30.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a magnet (c) moong seeds (d) cotton wool
31. 31.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the fruits (c) the leaves (d) the flowers
32. 32.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) warmth (b) soil (c) sunlight (d) sugar
34. 34.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) salt (d) a shallow dish
36. 36.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) soap solution (d) orange juice
37. 37.True or false: plugging in the iron is a job a child can do. (a) False (b) True
38. 38.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) cooking an egg (d) melting butter
39. 39.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) muddy water (d) a funnel

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