Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 901 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) a funnel (d) muddy water
2. 2.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a few hours (c) a potted plant (d) turmeric powder
3. 3.🔍 Which is the odd one out? (a) rusting iron (b) browning lemon ink (c) melting ice (d) milk turning to curd
4. 4.🧺 Which of these is needed for making butter? (a) a battery cell (b) a bowl (c) turmeric powder (d) a balloon
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) salt (b) water (c) warmth (d) air
7. 7.🔍 Which is the odd one out? (a) warmth (b) sugar (c) salt (d) soil
8. 8.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
9. 9.🧺 Which of these is not needed for the leafy bag test? (a) a magnet (b) a few hours (c) a rubber band (d) sunlight
10. 10.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
11. 11.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is magnetic (d) soap is hot
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
14. 14.🍋 Why does the lemon writing turn brown with heat? (a) paper turns lemony (b) heat adds colour (c) the juice scorches first (d) the iron is brown
15. 15.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
16. 16.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) False (b) True
18. 18.True or false: sand does not dissolve in water. (a) False (b) True
19. 19.🛟 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
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a shallow dish (d) a mirror
21. 21.🧈 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
22. 22.🧺 Which of these is not needed for the yeast balloon? (a) a magnet (b) warm water (c) a balloon (d) a small bottle
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) a potted plant (d) a battery cell
25. 25.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
26. 26.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
27. 27.True or false: a balloon is needed for sprouting seeds. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) turmeric powder (d) white paper strips
30. 30.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the time we wait (b) the size of the plant (c) sun or shade (d) amount of water drops
33. 33.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) chalk powder (d) sugar
34. 34.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sawdust (d) sugar
35. 35.🔍 What do you see after shaking cream in a jar for a long time? (a) clear water only (b) bubbles of gas (c) lumps of butter (d) sugar crystals
36. 36.True or false: sugar does not dissolve in water. (a) True (b) False
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
38. 38.True or false: baking soda water is an acid. (a) True (b) False
39. 39.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) water (c) yeast (d) moong seeds
40. 40.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) it is only melting (c) no, nothing changes (d) yes, a new gas forms

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