Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 60 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) yeast
2. 2.🪴 Where did the water inside the bag come from? (a) the rain (b) the leaves (c) the rubber band (d) the plastic
3. 3.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) sunlight (c) a clear plastic bag (d) turmeric powder
4. 4.🌱 Is soil needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
5. 5.🔍 Which is the odd one out? (a) writing the message (b) plugging in the iron (c) reading the message (d) dipping the cotton bud
6. 6.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
7. 7.⚖️ 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) False (b) True
8. 8.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) the cream temperature (c) time to make butter (d) the same jar
10. 10.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) writing turns green (c) writing stays faint (d) the paper floats
11. 11.True or false: wet seeds in the dark does not sprout. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
13. 13.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) table salt (d) sand
14. 14.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) clear water (c) thick whipped cream (d) powder
15. 15.True or false: a small bowl is needed for the secret lemon message. (a) True (b) False
16. 16.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) dissolving salt (c) freezing water (d) melting butter
17. 17.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) baking soda water (d) soap solution
18. 18.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting butter (c) browning lemon ink (d) rusting iron
19. 19.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) any child (c) the youngest child (d) only an adult
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns to cheese (d) it turns blue
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) rub your eyes (c) lick your fingers (d) wash your hands
24. 24.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the kind of balloon (c) size of the balloon (d) the amount of vinegar
27. 27.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) nothing at all (d) it turns to ice
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
29. 29.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a small bottle (c) a paper clip (d) sugar
30. 30.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
32. 32.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
33. 33.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) table salt
35. 35.🔮 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
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a balloon (c) a timer (d) fresh cream
37. 37.🛟 What should you do after touching soil or seeds? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
38. 38.⚖️ 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) False (b) True
39. 39.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) cooking oil (d) small pebbles
40. 40.🧺 Which of these is not needed for making butter? (a) a magnet (b) cold water to rinse (c) fresh cream (d) a bowl

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