Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 172 · 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.🔍 Which is the odd one out? (a) letting the paper dry (b) writing the message (c) plugging in the iron (d) reading the message
2. 2.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) clear water (c) thick whipped cream (d) powder
3. 3.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) salt water (d) detergent water
4. 4.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) it fills with soil (c) much more water (d) exactly the same
5. 5.True or false: baking soda water is an acid. (a) True (b) False
6. 6.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) sieving (c) filtering (d) winnowing
8. 8.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) turmeric powder (c) a potted plant (d) a clear plastic bag
9. 9.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
10. 10.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) dipping the cotton bud (c) putting the iron away (d) cutting the lemon
11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
12. 12.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
13. 13.🫧 Which of these is neutral? (a) sugar water (b) soap solution (c) curd (d) orange juice
14. 14.🪴 Which of these is a job of the leaves? (a) give out water vapour (b) make seeds (c) take in water from soil (d) hold up the leaves
15. 15.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
16. 16.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a rubber band (c) turmeric powder (d) a potted plant
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon
19. 19.🧺 Which of these is not needed for the yeast balloon? (a) a battery cell (b) dry yeast (c) sugar (d) a balloon
20. 20.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
21. 21.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) soap solution (d) sugar water
22. 22.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) warmth (b) sunlight (c) water (d) air
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) days to see crystals (c) sunny or shady place
25. 25.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
26. 26.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
27. 27.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
28. 28.True or false: cutting the lemon is a job a child can do. (a) False (b) True
29. 29.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
30. 30.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the kind of seeds
31. 31.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the fruits (c) the leaves (d) the flowers
32. 32.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.⚖️ 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) size of the balloon (c) the amount of water (d) the water temperature
34. 34.True or false: salt is not needed for a seed to sprout. (a) False (b) True
35. 35.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
36. 36.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) yes, if cooled (c) yes, if shaken (d) no, it stays brown
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the amount of vinegar (d) size of the balloon
38. 38.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
39. 39.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) size of the balloon (c) spoons of baking soda (d) the kind of balloon

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