Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 376 · 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.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
2. 2.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) a rainbow (c) dark brown words (d) blue words
3. 3.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sand (d) chalk powder
4. 4.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) warm water (c) a piece of string (d) a spoon
7. 7.⚖️ 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) how hard we shake (c) the amount of cream (d) the same jar
8. 8.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
9. 9.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it wilts and droops (d) it flowers more
10. 10.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) it turned into air (c) dry juice is see-through (d) the paper ate it
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) it fizzes (d) crystals grow faster
12. 12.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
14. 14.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) curd (d) lemon juice
15. 15.True or false: cotton wool is needed for sprouting seeds. (a) True (b) False
16. 16.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) cotton or cloth (d) a funnel
18. 18.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
19. 19.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with sharp wire (c) with a hot glue gun (d) as tight as possible
20. 20.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a battery cell (c) cold water to rinse (d) a bowl
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) salt (d) a mirror
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of water (b) the water temperature (c) size of the balloon
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) a dropper or spoon (d) soap solution
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) a balloon (d) a mirror
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
26. 26.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
27. 27.True or false: fresh cream is not needed for making butter. (a) True (b) False
28. 28.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) carbon dioxide (c) hydrogen (d) helium
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) False (b) True
31. 31.True or false: warmth is needed for a seed to sprout. (a) True (b) False
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) yeast (d) a mirror
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
34. 34.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it turns yellow (c) so it gets hot (d) so cream does not spill
35. 35.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) exactly the same (c) much more water (d) much less water
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) an empty bottle (c) baking soda (d) a mirror
37. 37.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
38. 38.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) whoever is fastest (c) only an adult (d) any child
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: baking soda does not dissolve in water. (a) True (b) False

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