Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 946 · 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 of these is not needed for the yeast balloon? (a) turmeric powder (b) dry yeast (c) a balloon (d) sugar
2. 2.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) a clear plastic bag (d) a mirror
3. 3.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
4. 4.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) wet or dry cotton (b) how many seeds sprout (c) the same bowls (d) the same place
5. 5.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
6. 6.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
8. 8.🪴 Which of these is a job of the stem? (a) take in water from soil (b) make food in sunlight (c) carry water upward (d) make seeds
9. 9.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much more water (c) exactly the same (d) much less water
10. 10.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) salt
11. 11.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) plugging in the iron (d) writing the message
12. 12.True or false: salt water is neutral. (a) False (b) True
13. 13.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a comb (d) turmeric powder
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
17. 17.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) salt water (d) sugar water
19. 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) sugar (d) salt
21. 21.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) True (b) False
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a mirror (d) sand and pebbles
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a magnet (c) turmeric powder (d) a clear plastic bag
25. 25.🫗 How do we separate husk from rice grain? (a) evaporating (b) filtering (c) winnowing (d) handpicking
26. 26.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
27. 27.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a funnel or spoon (c) a balloon (d) a magnet
28. 28.True or false: turmeric powder is not needed for the secret lemon message. (a) False (b) True
29. 29.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
30. 30.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) dark brown words (c) a rainbow (d) almost nothing
31. 31.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) True (b) False
32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
34. 34.True or false: hold the plant in soil is a job of the flower. (a) False (b) True
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
37. 37.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a spoon (d) a balloon
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) yeast
40. 40.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) magnetic (d) saturated

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