Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 471 · 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.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) yeast (c) a few days (d) turmeric powder
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
3. 3.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
4. 4.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a magnet (c) a few days (d) water
5. 5.⚖️ 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 kind of plant (b) the same kind of bag (c) the time we wait (d) amount of water drops
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) False (b) True
8. 8.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) browning lemon ink (c) melting ice (d) dissolving salt
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) white paper strips (d) yeast
10. 10.🫗 How do we separate gravel from fine sand? (a) winnowing (b) evaporating (c) filtering (d) sieving
11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
15. 15.🌱 Why do the seeds on dry cotton not sprout? (a) they are too wet (b) they have no soil (c) they have no water (d) they have no salt
16. 16.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧺 Which of these is not needed for the fizzy balloon? (a) a mirror (b) vinegar (c) an empty bottle (d) baking soda
18. 18.📘 What is yeast? (a) a kind of stone (b) a tiny living fungus (c) a kind of salt (d) a kind of sugar
19. 19.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a bowl (c) a magnet (d) a battery cell
20. 20.🧺 Which of these is not needed for sprouting seeds? (a) a battery cell (b) water (c) a small bowl (d) moong seeds
21. 21.True or false: take in water from soil is a job of the flower. (a) True (b) False
22. 22.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
24. 24.⚖️ 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 kind of salt (b) days to see crystals (c) sunny or shady place (d) the same dish
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a battery cell (d) a funnel
26. 26.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
27. 27.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
28. 28.🔮 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
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) yeast (d) a jar with a tight lid
30. 30.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) it fills with soil (d) much less water
31. 31.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) thick whipped cream (c) ice (d) powder
32. 32.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
33. 33.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the iron setting (c) the same cotton bud (d) how dark the writing is
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a mirror (b) an adult with an iron (c) white paper (d) lemon juice
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) in a busy doorway (d) on the edge of a table
38. 38.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🫧 Which of these is an acid? (a) vinegar (b) sugar water (c) detergent water (d) soap solution
40. 40.🔍 Which is the odd one out? (a) orange juice (b) soap solution (c) curd (d) vinegar

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