Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 838 · 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.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🪴 Which of these is a job of the stem? (a) take in water from soil (b) make food in sunlight (c) hold up the leaves (d) hold the plant in soil
3. 3.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) it is only melting (c) no, nothing changes (d) it is only dissolving
4. 4.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
5. 5.⚖️ 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 same kind of bag (b) sun or shade (c) the size of the plant (d) the time we wait
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a tray for spills (c) a funnel or spoon (d) a magnet
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) vinegar (c) a magnet (d) sunlight
10. 10.🧺 Do we need water for sprouting seeds? (a) not needed (b) needed
11. 11.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rub it hard (d) rinse with clean water
12. 12.🫗 How do we separate sugar from sugar water? (a) winnowing (b) filtering (c) evaporating (d) sieving
13. 13.🧺 Which of these is needed for the fizzy balloon? (a) a balloon (b) sugar (c) a battery cell (d) a magnet
14. 14.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) baking a cake (d) browning lemon ink
15. 15.True or false: make seeds is a job of the flower. (a) False (b) True
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
17. 17.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
18. 18.True or false: a cotton bud is not needed for the secret lemon message. (a) False (b) True
19. 19.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
20. 20.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
22. 22.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it is sticky (c) it can burn skin (d) it is magnetic
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) a rainbow (c) blue words (d) almost nothing
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for sprouting seeds? (a) a battery cell (b) water (c) a few days (d) a small bowl
27. 27.🧈 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
28. 28.True or false: a balloon is not needed for the yeast balloon. (a) True (b) False
29. 29.True or false: turmeric powder is needed for making butter. (a) False (b) True
30. 30.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
32. 32.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
35. 35.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
36. 36.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
37. 37.🫗 Which of these is done by handpicking? (a) mud from water (b) chaff from wheat grain (c) bad grains from rice (d) husk from rice grain
38. 38.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) pour it down the sink (c) put it in your mouth (d) keep it for a month
39. 39.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) sugar water (d) vinegar
40. 40.🧺 Which of these is not needed for the fizzy balloon? (a) a seed (b) a tray for spills (c) a balloon (d) an empty bottle

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