Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 744 · 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.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the number of seeds (b) wet or dry cotton (c) how many seeds sprout (d) the same bowls
2. 2.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same funnel (c) how clear the water is (d) the amount poured
4. 4.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a mirror (d) salt
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
7. 7.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) a dropper or spoon (d) soap solution
9. 9.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) dissolving salt (c) browning lemon ink (d) baking a cake
10. 10.🔍 Which is the odd one out? (a) time (b) warm water (c) sugar (d) salt
11. 11.🔍 What do you see after shaking cream in a jar for a long time? (a) sugar crystals (b) bubbles of gas (c) lumps of butter (d) clear water only
12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
13. 13.⚖️ 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) amount of water drops (b) the time we wait (c) sun or shade (d) the size of the plant
14. 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) a mirror (d) a clear plastic bag
15. 15.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a mirror (c) sunlight (d) vinegar
16. 16.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
17. 17.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) small pebbles (d) table salt
18. 18.🧺 Which of these is needed for the leafy bag test? (a) a rubber band (b) yeast (c) a battery cell (d) vinegar
19. 19.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
20. 20.True or false: salt is something yeast needs. (a) False (b) True
21. 21.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
22. 22.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it turns yellow (c) so it gets hot (d) so cream does not spill
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) time to make butter (b) how hard we shake (c) the amount of cream (d) the same jar
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the ironing time (b) the iron setting (c) the same paper (d) the kind of juice
25. 25.True or false: sugar water is a base. (a) False (b) True
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of salt (b) days to see crystals (c) the kind of salt (d) sunny or shady place
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) plain water (d) soap solution
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
30. 30.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
31. 31.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) throw it at a wall (c) pour it down the sink (d) put it in your mouth
34. 34.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
35. 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the number of drops
37. 37.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) blue words (d) dark brown words
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) vinegar (c) sunlight (d) a few hours
39. 39.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it is sticky (c) it is cold (d) it can burn skin
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it

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