Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 389 · 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? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it grows faster (c) it turns blue (d) it flowers more
3. 3.📘 What do we call a seed starting to grow? (a) pollination (b) evaporation (c) germination (d) condensation
4. 4.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rub it hard (c) rinse with clean water (d) add baking soda
5. 5.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) putting the iron away (c) ironing the paper (d) writing the message
6. 6.🔍 Which is the odd one out? (a) reading the message (b) ironing the paper (c) plugging in the iron (d) putting the iron away
7. 7.🫧 Which of these is an acid? (a) plain water (b) salt water (c) baking soda water (d) lemon juice
8. 8.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) seal it in a glass jar (d) shake it near your face
9. 9.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) evaporating (d) sieving
10. 10.True or false: lemon juice is a base. (a) False (b) True
11. 11.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
12. 12.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a mirror (c) a dropper or spoon (d) white paper strips
13. 13.🫧 Which of these is a base? (a) sugar water (b) curd (c) soap solution (d) vinegar
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.True or false: plugging in the iron is a job a child can do. (a) True (b) False
16. 16.True or false: baking soda water is a base. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
18. 18.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
19. 19.🔮 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
20. 20.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) baking a cake
21. 21.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) take in water from soil (c) hold up the leaves (d) make seeds
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) tamarind water (d) salt water
24. 24.🧺 Which of these is needed for sprouting seeds? (a) cotton wool (b) a magnet (c) a battery cell (d) a mirror
25. 25.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
26. 26.⚖️ 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) the same bottles (d) the water temperature
27. 27.⚖️ 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
28. 28.True or false: boiled seeds does not sprout. (a) False (b) True
29. 29.True or false: curd is an acid. (a) False (b) True
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same muddy water (d) the amount poured
31. 31.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
32. 32.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) no, it stays brown (c) yes, if shaken (d) yes, if cooled
33. 33.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it changes colour (c) it can block breathing (d) it is too big
34. 34.True or false: carry water upward is a job of the flower. (a) True (b) False
35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a small bottle (c) sugar (d) a battery cell
36. 36.True or false: sugar water keeps turmeric yellow. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) food colour (b) small pebbles (c) table salt (d) baking soda
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) False (b) True
40. 40.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) yeast (d) turmeric powder

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