Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 692 · 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: seeds on wet cotton does not sprout. (a) True (b) False
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) lemon juice (c) a dropper or spoon (d) turmeric powder
3. 3.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) put it in your mouth (d) keep it away from eyes
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the time we wait (b) the size of the plant (c) sun or shade (d) the same kind of bag
5. 5.True or false: putting the iron away is a job a child can do. (a) True (b) False
6. 6.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) sand (d) glucose powder
7. 7.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) helium (c) oxygen (d) carbon dioxide
8. 8.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) brown (c) white (d) green
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the kind of balloon (c) the same bottle (d) the amount of vinegar
10. 10.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) lemon juice (c) a battery cell (d) turmeric powder
11. 11.📘 What is yeast? (a) a kind of sugar (b) a kind of salt (c) a tiny living fungus (d) a kind of stone
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a balloon (d) turmeric powder
14. 14.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
15. 15.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
16. 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🔍 Which is the odd one out? (a) writing the message (b) letting the paper dry (c) plugging in the iron (d) dipping the cotton bud
18. 18.🪴 Where did the water inside the bag come from? (a) the plastic (b) the rubber band (c) the rain (d) the leaves
19. 19.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
20. 20.True or false: a jar with a tight lid is needed for making butter. (a) True (b) False
21. 21.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) a small bowl (c) a cotton bud (d) an adult with an iron
22. 22.🌱 Will these sprout: boiled seeds? (a) does not sprout (b) sprouts
23. 23.True or false: salt is needed for growing salt crystals. (a) False (b) True
24. 24.True or false: gravel from fine sand is done by sieving. (a) True (b) False
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is the one thing we change. (a) False (b) True
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is what we measure. (a) False (b) True
27. 27.True or false: melting butter is a change that cannot be undone. (a) True (b) False
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) time to make butter (c) the cream temperature (d) the same jar
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the amount of vinegar (c) the kind of balloon (d) the same bottle
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) yeast (d) salt
34. 34.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it gets wet (c) it is too big (d) it can block breathing
35. 35.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) a magnet
37. 37.True or false: a jar with a tight lid is not needed for making butter. (a) False (b) True
38. 38.True or false: warmth is not needed for a seed to sprout. (a) False (b) True
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False

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