Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 67 · 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.🛟 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
2. 2.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) sunlight (c) yeast (d) a mirror
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) False (b) True
4. 4.True or false: gravel from fine sand is done by sieving. (a) False (b) True
5. 5.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a mirror (c) sugar (d) baking soda
7. 7.🪴 Which of these is a job of the flower? (a) make food in sunlight (b) make seeds (c) take in water from soil (d) give out water vapour
8. 8.True or false: freezing water is a change that cannot be undone. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) air (b) warmth (c) water (d) salt
10. 10.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
11. 11.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
12. 12.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
13. 13.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) writing stays faint (c) writing turns green (d) the paper floats
14. 14.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) tiny water drops (c) salt crystals (d) nothing at all
16. 16.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a balloon (b) a small bowl (c) cotton wool (d) moong seeds
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the amount of vinegar (c) the kind of balloon (d) size of the balloon
18. 18.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False
19. 19.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
20. 20.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) sunlight (b) time (c) warm water (d) sugar
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) sand and pebbles (d) a funnel
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🍋 Which of these steps is a job a child can do? (a) reading the message (b) ironing the paper (c) plugging in the iron (d) cutting the lemon
25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
26. 26.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
29. 29.🧂 Which of these does not dissolve in water? (a) sand (b) sugar (c) table salt (d) baking soda
30. 30.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
31. 31.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so air gets out (c) so it turns yellow (d) so cream does not spill
32. 32.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) yes, if cooled (c) no, it stays brown (d) yes, in the dark
33. 33.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) hydrogen (c) helium (d) carbon dioxide
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is kept the same. (a) True (b) False
35. 35.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) bran from wheat flour (c) salt from sea water (d) chaff from wheat grain
36. 36.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
37. 37.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) white (c) green (d) brown
38. 38.🍋 Which of these steps is a job for an adult? (a) reading the message (b) letting the paper dry (c) dipping the cotton bud (d) cutting the lemon
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) turmeric powder (c) a small bowl (d) white paper
40. 40.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) vinegar (d) plain water

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