Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 245 · 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.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) cotton wool (c) a battery cell (d) a mirror
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) a spoon (d) a piece of string
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: yeast is needed for the leafy bag test. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) sugar (b) sunlight (c) air (d) soil
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) yeast
11. 11.True or false: reading the message is a job for an adult. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) a dropper or spoon (d) lemon juice
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the hot sunny day (c) the cool cloudy day (d) neither of them
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) white paper (c) turmeric powder (d) lemon juice
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) a magnet (d) sand and pebbles
18. 18.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
19. 19.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
20. 20.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is bigger (c) the balloon is smaller (d) it shrinks to nothing
21. 21.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) white paper strips (d) yeast
22. 22.🧺 Which of these is needed for sprouting seeds? (a) water (b) a battery cell (c) a mirror (d) a magnet
23. 23.🌱 Which of these is not needed for a seed to sprout? (a) air (b) water (c) soil (d) warmth
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) writing the message (b) letting the paper dry (c) ironing the paper (d) dipping the cotton bud
26. 26.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
27. 27.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
28. 28.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) it glows in the dark (c) lots of fizzy bubbles (d) nothing at all
29. 29.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) an empty bottle (c) a magnet (d) a tray for spills
31. 31.⚖️ 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
32. 32.True or false: a tray for spills is needed for the fizzy balloon. (a) False (b) True
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) tamarind water (d) detergent water
34. 34.⚖️ 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 kind of balloon (c) size of the balloon (d) spoons of baking soda
35. 35.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
36. 36.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
37. 37.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) rub your eyes (c) skip washing (d) lick your fingers
38. 38.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
39. 39.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False

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