Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 796 · 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.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
2. 2.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) melting ice (b) dissolving salt (c) milk turning to curd (d) freezing water
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a tray for spills (c) a mirror (d) sugar
5. 5.🌱 Which of these does not sprout? (a) seeds in the freezer (b) wet seeds in the dark (c) seeds on wet cotton (d) wet seeds by a window
6. 6.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it changes colour (d) it gets wet
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the same dish (c) days to see crystals
9. 9.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) plain water (d) curd
10. 10.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
11. 11.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) wet seeds by a window (d) seeds on dry cotton
12. 12.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is what we measure. (a) True (b) False
14. 14.True or false: hold up the leaves is a job of the stem. (a) True (b) False
15. 15.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a comb (c) a balloon (d) a seed
16. 16.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) vinegar (d) soap solution
17. 17.🔮 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
18. 18.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) freezing water (d) browning lemon ink
19. 19.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
21. 21.🌱 Seeds need water, air and ___ to sprout. (a) warmth (b) sugar (c) salt (d) soil
22. 22.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
23. 23.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it takes much longer (d) it turns pink
24. 24.🧺 Which of these is needed for the leafy bag test? (a) a potted plant (b) a magnet (c) a mirror (d) a battery cell
25. 25.True or false: plain water keeps turmeric yellow. (a) True (b) False
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) spoons of baking soda (c) size of the balloon (d) the amount of vinegar
27. 27.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) much less water (d) it fills with soil
28. 28.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
29. 29.🛟 Who should use the hot iron in the secret message experiment? (a) only an adult (b) whoever is fastest (c) any child (d) the youngest child
30. 30.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) sugar (d) food colour
31. 31.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a bowl (c) fresh cream (d) turmeric powder
32. 32.True or false: melting ice is a change that cannot be undone. (a) True (b) False
33. 33.True or false: soap solution is a base. (a) True (b) False
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a small bowl (c) an adult with an iron (d) a battery cell
35. 35.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is what we measure. (a) True (b) False
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 size of the plant (b) amount of water drops (c) the kind of plant (d) the same kind of bag
38. 38.True or false: cotton wool is needed for sprouting seeds. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) soap solution (b) curd (c) vinegar (d) orange juice
40. 40.True or false: an adult with an iron is not needed for the secret lemon message. (a) True (b) False

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