Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 924 · 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.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) exactly the same (d) it fills with soil
3. 3.🧺 Which of these is needed for making butter? (a) cold water to rinse (b) a magnet (c) turmeric powder (d) a balloon
4. 4.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it is too big (d) it changes colour
5. 5.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
6. 6.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
7. 7.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
8. 8.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
9. 9.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
10. 10.🧺 Do we need a balloon for the secret lemon message? (a) needed (b) not needed
11. 11.True or false: warm water is needed for the yeast balloon. (a) True (b) False
12. 12.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a rubber band (c) vinegar (d) a few hours
13. 13.True or false: warm water is something yeast needs. (a) True (b) False
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) turmeric powder (c) yeast (d) a mirror
15. 15.True or false: tea leaves from tea is done by sieving. (a) True (b) False
16. 16.🫧 Which of these is a base? (a) salt water (b) curd (c) baking soda water (d) plain water
17. 17.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a tiny living fungus (d) a kind of salt
18. 18.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
19. 19.True or false: hold the plant in soil is a job of the stem. (a) False (b) True
20. 20.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a magnet (d) a balloon
21. 21.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
22. 22.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
24. 24.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
25. 25.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they glow (b) they sprout faster (c) they grow fruit (d) they do not sprout
26. 26.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
28. 28.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) melting butter (d) milk turning to curd
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) sand and pebbles (d) muddy water
30. 30.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) tiny insects (c) salt crystals (d) nothing at all
31. 31.🔍 Which is the odd one out? (a) plain water (b) salt water (c) sugar water (d) orange juice
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
33. 33.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a balloon (c) a small bowl (d) water
34. 34.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is the one thing we change. (a) True (b) False
37. 37.True or false: a timer is not needed for making butter. (a) True (b) False
38. 38.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
39. 39.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
40. 40.True or false: gravel from fine sand is done by sieving. (a) False (b) True

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