Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 198 · 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.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: sugar is needed for a seed to sprout. (a) False (b) True
3. 3.True or false: a magnet is needed for making butter. (a) True (b) False
4. 4.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
5. 5.🍋 Which of these steps is a job for an adult? (a) reading the message (b) cutting the lemon (c) writing the message (d) dipping the cotton bud
6. 6.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) yeast (d) a dropper or spoon
7. 7.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) add baking soda (d) rub it hard
8. 8.🌱 Which of these sprouts in a few days? (a) seeds on wet cotton (b) seeds on dry cotton (c) boiled seeds (d) seeds in the freezer
9. 9.True or false: a rubber band is needed for the leafy bag test. (a) False (b) True
10. 10.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
11. 11.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the same paper
12. 12.True or false: vinegar is a base. (a) False (b) True
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) how dark the writing is (c) the kind of juice (d) the same paper
14. 14.True or false: warm water is something yeast does not need. (a) True (b) False
15. 15.🧺 Which of these is needed for making butter? (a) a balloon (b) yeast (c) turmeric powder (d) a bowl
16. 16.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a magnet (b) white paper (c) an adult with an iron (d) lemon juice
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) soap solution (d) white paper strips
19. 19.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
20. 20.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) plain water (d) lemon juice
23. 23.🔍 Which is the odd one out? (a) a magnet (b) salt (c) sunlight (d) warm water
24. 24.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) clearer (d) salty
25. 25.🧺 Do we need lemon juice for the secret lemon message? (a) needed (b) not needed
26. 26.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) germination (c) transpiration (d) reflection
27. 27.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it is much faster (c) it turns pink (d) it makes salt
28. 28.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) it turns to bread (c) the balloon is smaller (d) it shrinks to nothing
29. 29.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) vinegar (d) sugar
30. 30.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
32. 32.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of water (c) the water temperature (d) the amount of yeast
34. 34.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) a magnet (d) a potted plant
35. 35.🪴 Which of these is a job of the flower? (a) carry water upward (b) hold the plant in soil (c) make seeds (d) take in water from soil
36. 36.🔍 Which is the odd one out? (a) sunlight (b) a magnet (c) salt (d) time
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) False (b) True
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same glass (c) how clear the water is (d) the same funnel
40. 40.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) whoever is fastest (c) the youngest child (d) only an adult

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