Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 355 · 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.True or false: ironing the paper is a job for an adult. (a) True (b) False
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
3. 3.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) small pebbles (d) sawdust
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the cream temperature (c) the amount of cream
5. 5.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they float apart (c) they become magnets (d) they react
6. 6.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) yeast (c) lemon juice (d) white paper
7. 7.🔮 Can the brown writing go back to being invisible? (a) yes, if cooled (b) yes, if shaken (c) yes, in the dark (d) no, it stays brown
8. 8.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a magnet (b) an adult with an iron (c) a small bowl (d) lemon juice
9. 9.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
10. 10.True or false: lemon juice is needed for the secret lemon message. (a) False (b) True
11. 11.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) keep it away from eyes (d) seal it in a glass jar
12. 12.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) no, nothing changes (c) it is only melting (d) it is only dissolving
13. 13.True or false: a mirror is needed for the leafy bag test. (a) False (b) True
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) dipping the cotton bud (d) putting the iron away
16. 16.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it turns pink (c) it is much faster (d) it makes salt
17. 17.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
18. 18.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a battery cell (c) a mirror (d) a magnet
19. 19.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
21. 21.True or false: baking soda water is neutral. (a) False (b) True
22. 22.True or false: sunlight is something yeast needs. (a) True (b) False
23. 23.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with sharp wire (c) as tight as possible (d) with a hot glue gun
24. 24.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) soap solution (c) water (d) a dropper or spoon
25. 25.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) writing the message (c) plugging in the iron (d) putting the iron away
26. 26.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
27. 27.True or false: cold water to rinse is not needed for making butter. (a) True (b) False
28. 28.True or false: water is needed for sprouting seeds. (a) False (b) True
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.True or false: sunlight is something yeast does not need. (a) True (b) False
31. 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a mirror (c) a potted plant (d) a clear plastic bag
32. 32.🧺 Do we need sugar for the fizzy balloon? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) sand and pebbles (d) a clean glass
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) True (b) False
35. 35.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
36. 36.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
37. 37.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) an empty bottle (c) baking soda (d) vinegar
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) sugar (c) warm water (d) a mirror
39. 39.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids