Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 637 · 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.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) False (b) True
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it changes colour (c) it can block breathing (d) it gets wet
5. 5.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a potted plant (c) vinegar (d) a rubber band
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a shallow dish (c) warm water (d) a piece of string
7. 7.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) False (b) True
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) spoons of baking soda (c) the kind of balloon (d) the amount of vinegar
12. 12.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) shake it near your face (c) keep it away from eyes (d) seal it in a glass jar
13. 13.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it wilts and droops (c) it flowers more (d) it turns blue
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) yeast (d) cotton or cloth
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) sunlight (b) a magnet (c) time (d) vinegar
17. 17.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) vinegar (d) warm water
18. 18.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) milk turning to curd (d) folding paper
19. 19.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) cutting the lemon (d) letting the paper dry
20. 20.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) sand and pebbles (d) a clean glass
22. 22.🫧 Which of these is neutral? (a) baking soda water (b) soap solution (c) sugar water (d) curd
23. 23.🧺 Which of these is not needed for the turmeric test? (a) water (b) a mirror (c) soap solution (d) white paper strips
24. 24.True or false: a comb is not needed for the fizzy balloon. (a) True (b) False
25. 25.🌱 Which of these is needed for a seed to sprout? (a) soil (b) salt (c) sugar (d) water
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
27. 27.True or false: small pebbles does not dissolve in water. (a) False (b) True
28. 28.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
29. 29.True or false: sugar water is a base. (a) True (b) False
30. 30.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) a small bottle (c) dry yeast (d) a balloon
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
33. 33.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
34. 34.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
35. 35.🪴 Which of these is a job of the roots? (a) hold up the leaves (b) make seeds (c) carry water upward (d) hold the plant in soil
36. 36.🪴 Which of these is a job of the flower? (a) hold the plant in soil (b) take in water from soil (c) hold up the leaves (d) make seeds
37. 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the kind of plant (b) amount of water drops (c) the same kind of bag (d) the time we wait
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) a magnet (d) a clean glass
39. 39.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the jar adds butter (c) shaking adds salt (d) the lid is warm
40. 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False

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