Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 716 · 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.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a funnel (d) a battery cell
3. 3.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) False (b) True
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) cooking oil (d) small pebbles
7. 7.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
8. 8.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
9. 9.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is the one thing we change. (a) False (b) True
11. 11.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
12. 12.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
13. 13.True or false: a battery cell is not needed for making butter. (a) False (b) True
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
15. 15.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) handpicking (d) filtering
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a mirror (c) a magnet (d) white paper
18. 18.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bran from wheat flour (c) gravel from fine sand (d) salt from sea water
19. 19.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it grows faster (b) it glows (c) the yeast is killed (d) it turns to sugar
20. 20.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) rub it hard (d) add baking soda
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a clean glass (d) a battery cell
25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) a piece of string (d) warm water
28. 28.🌱 Will these sprout: seeds on dry cotton? (a) does not sprout (b) sprouts
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the same jar (b) the cream temperature (c) time to make butter
30. 30.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
31. 31.🌱 Which of these is needed for a seed to sprout? (a) salt (b) air (c) sugar (d) soil
32. 32.🔍 Which is the odd one out? (a) warmth (b) air (c) sugar (d) water
33. 33.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
34. 34.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a bowl (c) a magnet (d) cold water to rinse
36. 36.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it changes colour (c) it gets wet (d) it is too big
37. 37.🍋 Secret message: who does this step — writing the message? (a) a child can do it (b) an adult does it
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the same bottle (c) size of the balloon
39. 39.🧈 Which of these is a change that can be undone? (a) baking a cake (b) freezing water (c) milk turning to curd (d) rusting iron
40. 40.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) steam (d) carbon dioxide gas

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