Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 347 · 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: soap solution is an acid. (a) False (b) True
2. 2.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) the ink is magnetic (c) the paper ate it (d) dry juice is see-through
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.🪴 Which part of a plant does this job: make seeds? (a) stem (b) flower (c) roots (d) leaves
5. 5.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it grows very little (c) it bursts at once (d) it turns yellow
6. 6.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
7. 7.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
8. 8.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
9. 9.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it turns pink (c) it makes salt (d) it is much faster
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
11. 11.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a battery cell
14. 14.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) nothing at all (c) it glows in the dark (d) lots of fizzy bubbles
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
16. 16.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
17. 17.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed
18. 18.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) boiling hot (d) warm, not hot
19. 19.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the kind of balloon (b) size of the balloon (c) spoons of baking soda
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) True (b) False
23. 23.True or false: vinegar is a base. (a) True (b) False
24. 24.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on dry cotton (c) boiled seeds (d) wet seeds in the dark
25. 25.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) the yeast is killed (c) it grows faster (d) it turns to sugar
26. 26.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) yes, they sprout (c) they turn to stones (d) no, never
27. 27.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) seal it in a glass jar (d) shake it near your face
28. 28.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a jar with a tight lid (c) a battery cell (d) cold water to rinse
29. 29.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
30. 30.🧺 Do we need a magnet for the secret lemon message? (a) not needed (b) needed
31. 31.True or false: cotton wool is not needed for sprouting seeds. (a) True (b) False
32. 32.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) baking a cake (b) folding paper (c) freezing water (d) melting butter
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
36. 36.True or false: soil is needed for a seed to sprout. (a) True (b) False
37. 37.True or false: lemon juice is not needed for the secret lemon message. (a) False (b) True
38. 38.🌱 What comes out of a moong seed first when it sprouts? (a) a fruit (b) a thorn (c) a flower (d) a tiny root
39. 39.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a pressure cooker (c) a mathani (churner) (d) a rolling pin
40. 40.🧺 Do we need a magnet for making butter? (a) needed (b) not needed

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