Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 443 · 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.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) still runny cream (c) cheese (d) butter lumps
2. 2.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
3. 3.True or false: a mirror is needed for the secret lemon message. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) warmth (b) sunlight (c) soil (d) sugar
5. 5.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
6. 6.🧺 Which of these is needed for making butter? (a) a magnet (b) a mirror (c) yeast (d) a timer
7. 7.True or false: soap solution is an acid. (a) False (b) True
8. 8.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
9. 9.True or false: plain water is neutral. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) letting the paper dry (b) dipping the cotton bud (c) reading the message (d) cutting the lemon
11. 11.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it is cold (d) it can burn skin
12. 12.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a clean glass (c) muddy water (d) a funnel
14. 14.True or false: small pebbles does not dissolve in water. (a) True (b) False
15. 15.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) vinegar (c) baking soda (d) a mirror
16. 16.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
17. 17.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) no, it stays brown (c) yes, if cooled (d) yes, if shaken
18. 18.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a few hours (c) a potted plant (d) a magnet
19. 19.🔍 Which is the odd one out? (a) orange juice (b) vinegar (c) baking soda water (d) curd
20. 20.🧺 Which of these is needed for making butter? (a) a magnet (b) a mirror (c) turmeric powder (d) a jar with a tight lid
21. 21.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) putting the iron away (c) letting the paper dry (d) plugging in the iron
22. 22.🔍 Which is the odd one out? (a) table salt (b) sand (c) chalk powder (d) small pebbles
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) a balloon (c) a small bottle (d) dry yeast
24. 24.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) putting the iron away (c) ironing the paper (d) plugging in the iron
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) muddy water (d) a balloon
26. 26.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) browning lemon ink (d) milk turning to curd
27. 27.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) plugging in the iron (d) letting the paper dry
28. 28.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) sugar (c) a mirror (d) a small bottle
29. 29.🎈 Why does the balloon blow up? (a) outside air gets in (b) the bottle shrinks (c) gas is made inside (d) vinegar is hot
30. 30.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) warm water (c) sugar (d) a mirror
31. 31.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
32. 32.🔍 Which is the odd one out? (a) dissolving salt (b) baking a cake (c) melting butter (d) folding paper
33. 33.🔍 Which is the odd one out? (a) salt (b) water (c) soil (d) sugar
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
36. 36.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
37. 37.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
38. 38.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
39. 39.🌱 Which of these is not needed for a seed to sprout? (a) sugar (b) air (c) warmth (d) water
40. 40.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False

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