Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 753 · 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 part of a plant does this job: hold up the leaves? (a) flower (b) roots (c) leaves (d) stem
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a magnet (b) a jar with a tight lid (c) a timer (d) a bowl
3. 3.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
5. 5.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
6. 6.True or false: a mirror is needed for sprouting seeds. (a) False (b) True
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) cotton or cloth (d) a clean glass
8. 8.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
10. 10.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need a balloon for making butter? (a) not needed (b) needed
13. 13.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) dipping the cotton bud (d) ironing the paper
14. 14.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) dark brown words (d) blue words
15. 15.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
16. 16.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
17. 17.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
18. 18.True or false: bad grains from rice is done by handpicking. (a) False (b) True
19. 19.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: hold the plant in soil is a job of the leaves. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) curd (d) vinegar
23. 23.True or false: a paper clip is not needed for the yeast balloon. (a) True (b) False
24. 24.True or false: white paper is needed for the secret lemon message. (a) True (b) False
25. 25.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
26. 26.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
28. 28.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
29. 29.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) it fills with soil (d) much less water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) ironing the paper (d) letting the paper dry
32. 32.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the amount of vinegar (c) the kind of balloon (d) the same bottle
34. 34.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) sunlight
35. 35.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
36. 36.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.🛟 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
38. 38.True or false: salt is not needed for a seed to sprout. (a) False (b) True
39. 39.True or false: give out water vapour is a job of the roots. (a) False (b) True
40. 40.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a magnet (c) water (d) a small bowl

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