Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 895 · 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 making butter? (a) needed (b) not needed
2. 2.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) rinse with clean water (c) add baking soda (d) ignore it
3. 3.🔍 Which is the odd one out? (a) ironing the paper (b) putting the iron away (c) cutting the lemon (d) letting the paper dry
4. 4.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) there is no change (c) it shrinks (d) it turns blue
5. 5.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the fruits (c) the flowers (d) the roots
6. 6.True or false: air is not needed for a seed to sprout. (a) False (b) True
7. 7.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) still runny cream (c) ghee (d) cheese
8. 8.🔍 Which is the odd one out? (a) plugging in the iron (b) putting the iron away (c) ironing the paper (d) writing the message
9. 9.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
10. 10.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
13. 13.🔍 Which is the odd one out? (a) ironing the paper (b) dipping the cotton bud (c) writing the message (d) reading the message
14. 14.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
15. 15.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) glucose powder (d) sugar
16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of yeast (c) size of the balloon (d) the water temperature
18. 18.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) a balloon (c) baking soda (d) a comb
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the amount poured (c) the same muddy water (d) the filter material
21. 21.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
22. 22.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
23. 23.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
24. 24.True or false: wet seeds by a window sprouts in a few days. (a) True (b) False
25. 25.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a balloon (c) a small bottle (d) turmeric powder
27. 27.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a bowl (c) fresh cream (d) cold water to rinse
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a shallow dish (c) warm water (d) a spoon
29. 29.True or false: rusting iron is a change that can be undone. (a) False (b) True
30. 30.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) only an adult (c) whoever is fastest (d) any child
31. 31.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) baking soda (c) a tray for spills (d) a seed
33. 33.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
34. 34.🧺 Do we need a battery cell for making butter? (a) needed (b) not needed
35. 35.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
36. 36.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) pale yellow (b) blue (c) bright red (d) dark green
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
38. 38.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) white (c) blue (d) brown
39. 39.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) almost nothing (d) dark brown words
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green

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