Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 202 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
2. 2.🌱 Which of these does not sprout? (a) boiled seeds (b) wet seeds by a window (c) wet seeds in the dark (d) seeds on wet cotton
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
4. 4.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) boiling hot (d) warm, not hot
5. 5.🧺 Do we need a magnet for the fizzy balloon? (a) not needed (b) needed
6. 6.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
7. 7.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) vinegar (c) a mirror (d) sunlight
8. 8.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) throw it at a wall (c) put it in your mouth (d) keep it for a month
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ 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 same dish (b) the amount of water (c) days to see crystals (d) sunny or shady place
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
12. 12.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
13. 13.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) throw them at friends (c) never put seeds in mouth (d) feed them to pets
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a balloon (d) soap solution
15. 15.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
16. 16.True or false: salt is not needed for growing salt crystals. (a) True (b) False
17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
18. 18.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) sugar water (d) vinegar
19. 19.🔍 Which is the odd one out? (a) putting the iron away (b) letting the paper dry (c) ironing the paper (d) plugging in the iron
20. 20.True or false: seeds on dry cotton sprouts in a few days. (a) False (b) True
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) the amount of vinegar (c) spoons of baking soda
23. 23.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it gets hot (c) so cream does not spill (d) so it turns yellow
24. 24.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
25. 25.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
27. 27.⚖️ 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
28. 28.True or false: take in water from soil is a job of the flower. (a) True (b) False
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) muddy water (d) sand and pebbles
30. 30.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
31. 31.🛟 What should you do after touching soil or seeds? (a) wash your hands (b) lick your fingers (c) skip washing (d) rub your eyes
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) a dropper or spoon (d) turmeric powder
34. 34.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sunlight (d) sugar
35. 35.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) sugar (d) time
36. 36.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
37. 37.🫧 Which of these is a base? (a) orange juice (b) vinegar (c) soap solution (d) salt water
38. 38.📘 What do we call a seed starting to grow? (a) evaporation (b) pollination (c) germination (d) condensation
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) muddy water (d) a mirror
40. 40.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) it turns to honey (c) a huge eruption (d) very little fizzing

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