Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 68 · 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.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) ignore it (d) add baking soda
2. 2.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) True (b) False
3. 3.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) yeast (c) a potted plant (d) turmeric powder
4. 4.True or false: soap solution is needed for the turmeric test. (a) False (b) True
5. 5.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) a mirror (d) a few hours
6. 6.🌱 Where does a sprouting seed get its first food from? (a) food stored in the seed (b) the air (c) the sunlight only (d) the cotton wool
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) True (b) False
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) yeast (d) salt
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) True (b) False
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the kind of juice (c) the same cotton bud (d) the ironing time
11. 11.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same paper (b) the kind of juice (c) the ironing time (d) how dark the writing is
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) False (b) True
13. 13.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
14. 14.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a cotton bud (c) white paper (d) a magnet
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
17. 17.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) orange juice (d) soap solution
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) tamarind water (d) soap solution
19. 19.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
20. 20.True or false: melting ice is a change that cannot be undone. (a) False (b) True
21. 21.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) melting butter (d) baking a cake
22. 22.True or false: baking soda water is neutral. (a) True (b) False
23. 23.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is the one thing we change. (a) True (b) False
25. 25.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) food colour (d) small pebbles
26. 26.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) sugar (d) small pebbles
27. 27.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so cream does not spill (c) so air gets out (d) so it gets hot
28. 28.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) sugar (c) baking soda (d) a seed
29. 29.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) lemon juice (d) a magnet
30. 30.True or false: a magnet is needed for the fizzy balloon. (a) True (b) False
31. 31.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) how clear the water is (c) the same glass (d) the filter material
33. 33.True or false: warmth is needed for a seed to sprout. (a) False (b) True
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) False (b) True
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a mirror
36. 36.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) salt (c) turmeric powder (d) yeast
37. 37.🔍 Which is the odd one out? (a) sunlight (b) a magnet (c) warm water (d) vinegar
38. 38.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) skip washing (c) wash your hands (d) lick your fingers
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) warm water (d) sugar
40. 40.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed

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