Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 75 · 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 baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is smaller (c) it turns to bread (d) the balloon is bigger
3. 3.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on dry cotton (c) seeds on wet cotton (d) wet seeds in the dark
4. 4.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) sugar (d) sunlight
5. 5.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) vinegar (d) detergent water
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a mirror (d) a funnel
7. 7.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it gets wet (c) it can block breathing (d) it changes colour
8. 8.🌱 Will these sprout: boiled seeds? (a) does not sprout (b) sprouts
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) lemon juice (d) water
10. 10.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) seal it in a glass jar (c) shake it near your face (d) put it in your mouth
11. 11.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a balloon (c) a cotton bud (d) white paper
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of salt (c) the same dish (d) the kind of salt
13. 13.🧺 Which of these is not needed for sprouting seeds? (a) a mirror (b) moong seeds (c) a few days (d) a small bowl
14. 14.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) nothing at all (c) it glows in the dark (d) lots of fizzy bubbles
15. 15.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) sand
16. 16.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
17. 17.True or false: warm water is something yeast does not need. (a) False (b) True
18. 18.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a magnet (c) a balloon (d) a comb
19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) the amount of yeast (c) the amount of water (d) size of the balloon
20. 20.True or false: a bowl is not needed for making butter. (a) True (b) False
21. 21.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
24. 24.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a magnet (c) a small bowl (d) a battery cell
25. 25.True or false: a timer is not needed for making butter. (a) True (b) False
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
27. 27.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) turmeric powder (c) dry yeast (d) a mirror
28. 28.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
29. 29.True or false: an adult with an iron is needed for the secret lemon message. (a) True (b) False
30. 30.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
31. 31.🪴 Which of these is a job of the stem? (a) hold up the leaves (b) take in water from soil (c) make food in sunlight (d) hold the plant in soil
32. 32.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
33. 33.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) cooking oil (d) sugar
34. 34.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) leaves (c) stem (d) roots
35. 35.🌱 Seeds need water, air and ___ to sprout. (a) warmth (b) salt (c) soil (d) sugar
36. 36.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
37. 37.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) sugar (c) a small bottle (d) a battery cell
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.True or false: mud from water is done by handpicking. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False

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