Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 44 · 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: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
2. 2.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is what we measure. (a) False (b) True
4. 4.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a tray for spills (c) a magnet (d) an empty bottle
5. 5.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) melting butter
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
7. 7.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) vinegar is hot (c) outside air gets in (d) gas is made inside
8. 8.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) give out water vapour (c) carry water upward (d) take in water from soil
9. 9.🍞 Which of these is something yeast needs? (a) sugar (b) a magnet (c) salt (d) sunlight
10. 10.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) soap solution
13. 13.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) rusting iron (d) dissolving salt
14. 14.True or false: wet seeds in the dark sprouts in a few days. (a) False (b) True
15. 15.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is what we measure. (a) True (b) False
17. 17.🫗 Which of these is done by filtering? (a) mud from water (b) husk from rice grain (c) small stones from dal (d) gravel from fine sand
18. 18.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) it turns to ice (d) lots of fizzy bubbles
19. 19.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
20. 20.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) how hard we shake (b) the amount of cream (c) the cream temperature (d) time to make butter
21. 21.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) a huge eruption (c) very little fizzing (d) the balloon bursts
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) white paper strips (d) lemon juice
24. 24.True or false: a bowl is not needed for making butter. (a) False (b) True
25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
26. 26.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) eat a few to check (c) never put seeds in mouth (d) feed them to pets
27. 27.🔍 Which is the odd one out? (a) salt (b) warm water (c) vinegar (d) a magnet
28. 28.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a balloon (c) cold water to rinse (d) a jar with a tight lid
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) cold water to rinse (d) a battery cell
31. 31.True or false: yeast is needed for making butter. (a) True (b) False
32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
33. 33.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
34. 34.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a small bottle (c) warm water (d) turmeric powder
35. 35.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
37. 37.🔍 Which is the odd one out? (a) a magnet (b) vinegar (c) time (d) sunlight
38. 38.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
39. 39.🌱 Will these sprout: wet seeds in the dark? (a) does not sprout (b) sprouts
40. 40.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) a rainbow (c) blue words (d) dark brown words

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