Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 232 · 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.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
2. 2.🫧 Which of these is neutral? (a) lemon juice (b) orange juice (c) curd (d) salt water
3. 3.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) air from outside (c) smoke (d) steam
4. 4.🫧 Which of these is an acid? (a) salt water (b) lemon juice (c) soap solution (d) detergent water
5. 5.True or false: a magnet is not needed for the yeast balloon. (a) False (b) True
6. 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a rubber band (c) a magnet (d) a clear plastic bag
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
9. 9.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) plugging in the iron (c) cutting the lemon (d) writing the message
10. 10.True or false: baking soda water is a base. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.True or false: make food in sunlight is a job of the stem. (a) False (b) True
13. 13.True or false: vinegar is not needed for the fizzy balloon. (a) True (b) False
14. 14.True or false: tea leaves from tea is done by sieving. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) cutting the lemon (b) plugging in the iron (c) reading the message (d) ironing the paper
16. 16.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
17. 17.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a balloon (d) turmeric powder
20. 20.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
21. 21.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) sugar (d) sawdust
23. 23.True or false: water is needed for a seed to sprout. (a) True (b) False
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) melting ice (d) rusting iron
26. 26.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
27. 27.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🌱 Which of these is needed for a seed to sprout? (a) salt (b) sunlight (c) sugar (d) water
30. 30.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
31. 31.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) turmeric powder (d) a balloon
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the amount of vinegar
33. 33.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) letting the paper dry (c) cutting the lemon (d) putting the iron away
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) dark green (b) pale yellow (c) bright red (d) blue
36. 36.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) make seeds (c) hold up the leaves (d) take in water from soil
37. 37.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
38. 38.⚖️ 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 what we measure. (a) True (b) False
39. 39.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a battery cell (c) water (d) a dropper or spoon

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