Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 544 · 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.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
2. 2.⚖️ 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) the time we wait (b) sun or shade (c) amount of water drops
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
5. 5.True or false: lemon juice is a base. (a) True (b) False
6. 6.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a magnet (c) a few days (d) cotton wool
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🫧 Which of these is neutral? (a) tamarind water (b) baking soda water (c) orange juice (d) salt water
9. 9.🍋 Which of these steps is a job for an adult? (a) reading the message (b) dipping the cotton bud (c) writing the message (d) putting the iron away
10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
11. 11.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they sprout faster (b) they glow (c) they grow fruit (d) they do not sprout
12. 12.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) there is no change (d) it shrinks
13. 13.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) exactly the same (d) much less water
14. 14.True or false: a mirror is needed for sprouting seeds. (a) False (b) True
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) ignore it (d) rinse with clean water
17. 17.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) sugar water (d) soap solution
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a tray for spills (c) vinegar (d) a mirror
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) True (b) False
20. 20.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) turmeric powder (c) cotton wool (d) a small bowl
22. 22.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) lots of fizzy bubbles (d) it turns to ice
23. 23.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
24. 24.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) a small bottle (d) sugar
25. 25.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
26. 26.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) it turns blue (c) more butter forms (d) it turns to cheese
27. 27.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) False (b) True
29. 29.True or false: ironing the paper is a job for an adult. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the number of drops (d) the liquid we test
31. 31.True or false: folding paper is a change that cannot be undone. (a) False (b) True
32. 32.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
35. 35.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) True (b) False
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a battery cell (d) muddy water
38. 38.🍋 Which of these steps is a job for an adult? (a) ironing the paper (b) letting the paper dry (c) dipping the cotton bud (d) writing the message
39. 39.True or false: lemon juice is not needed for the secret lemon message. (a) False (b) True
40. 40.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) False (b) True

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