Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 197 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) sugar (d) water
3. 3.True or false: a magnet is something yeast does not need. (a) False (b) True
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a balloon
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same paper
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the plant (c) amount of water drops
8. 8.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) yeast (c) an adult with an iron (d) a battery cell
9. 9.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a battery cell (c) a balloon (d) sugar
10. 10.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
11. 11.⚖️ 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) the same jar (c) how hard we shake (d) the cream temperature
12. 12.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
13. 13.🔍 Which is the odd one out? (a) salt (b) warm water (c) vinegar (d) sunlight
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the same bottle (c) spoons of baking soda (d) size of the balloon
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) salt crystals (c) tiny water drops (d) tiny insects
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) an empty bottle (d) a funnel or spoon
18. 18.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) lemon juice
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) soap solution (d) water
20. 20.True or false: a comb is not needed for the turmeric test. (a) True (b) False
21. 21.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
22. 22.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) sawdust (d) cooking oil
23. 23.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
24. 24.True or false: mud from water is done by handpicking. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) sugar (b) vinegar (c) sunlight (d) salt
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) a battery cell
27. 27.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) throw it at a wall (d) keep it for a month
28. 28.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) a mirror
30. 30.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) cooking oil (d) food colour
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
32. 32.🌱 Will these sprout: wet seeds in the dark? (a) does not sprout (b) sprouts
33. 33.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) ghee (c) butter lumps (d) still runny cream
34. 34.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
35. 35.🫗 How do we separate salt from sea water? (a) winnowing (b) sieving (c) filtering (d) evaporating
36. 36.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
37. 37.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to wash dishes (c) to colour rice (d) to clean floors
38. 38.True or false: soap solution keeps turmeric yellow. (a) False (b) True
39. 39.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
40. 40.True or false: a battery cell is needed for the secret lemon message. (a) True (b) False

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