Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 897 · 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 do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) tiny water drops (c) tiny insects (d) salt crystals
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a magnet (d) sand and pebbles
4. 4.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it turns yellow (c) it grows very little (d) it bursts at once
5. 5.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
6. 6.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it turns to ice (c) it glows in the dark (d) lots of fizzy bubbles
7. 7.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) baking soda (c) sugar (d) a seed
8. 8.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) winnowing (d) handpicking
9. 9.True or false: baking soda does not dissolve in water. (a) True (b) False
10. 10.⚖️ 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 kept the same. (a) False (b) True
11. 11.🧺 Which of these is needed for making butter? (a) a jar with a tight lid (b) a balloon (c) a mirror (d) a battery cell
12. 12.True or false: putting the iron away is a job a child can do. (a) True (b) False
13. 13.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
14. 14.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
15. 15.🫧 Which of these is a base? (a) vinegar (b) soap solution (c) curd (d) tamarind water
16. 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the kind of plant (b) amount of water drops (c) the time we wait (d) sun or shade
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) False (b) True
18. 18.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) a spoon (d) salt
20. 20.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
21. 21.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the gas froze (c) an ingredient ran out (d) the bottle got tired
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) air (b) water (c) soil (d) warmth
24. 24.True or false: fresh cream is needed for making butter. (a) False (b) True
25. 25.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
27. 27.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) seeds in the freezer (d) wet seeds in the dark
28. 28.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) a small bowl (c) white paper (d) a mirror
29. 29.🛟 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
30. 30.True or false: orange juice is an acid. (a) True (b) False
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) a mirror
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the ironing time (b) the kind of juice (c) how dark the writing is (d) the iron setting
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
34. 34.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) fresh cream (c) cold water to rinse (d) a mirror
35. 35.True or false: reading the message is a job a child can do. (a) True (b) False
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to change its colour (c) to make it fizz (d) to cool the water
38. 38.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a battery cell (c) water (d) a magnet
39. 39.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is smaller (c) it turns to bread (d) the balloon is bigger
40. 40.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it dissolves (d) it turns to sand

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