Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 460 · 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 is the odd one out? (a) salt (b) warm water (c) sugar (d) time
2. 2.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a funnel or spoon (c) baking soda (d) a mirror
3. 3.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) a battery cell (c) yeast (d) a small bowl
4. 4.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) letting the paper dry (b) reading the message (c) putting the iron away (d) dipping the cotton bud
6. 6.True or false: cutting the lemon is a job for an adult. (a) True (b) False
7. 7.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) no, never (b) they melt (c) yes, they sprout (d) they turn to stones
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.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) cotton or cloth (d) muddy water
10. 10.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) soap solution (d) lemon juice
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a spoon (d) a balloon
12. 12.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) sugar (d) an empty bottle
13. 13.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
14. 14.🍞 Does yeast need warm water to make gas? (a) yeast needs it (b) yeast does not need it
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) white paper strips (d) lemon juice
17. 17.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
18. 18.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so air gets out (c) so it gets hot (d) so cream does not spill
19. 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) turmeric powder (d) a magnet
22. 22.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
23. 23.🧺 Do we need cotton wool for sprouting seeds? (a) not needed (b) needed
24. 24.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) baking a cake (d) freezing water
25. 25.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold kills sugar (c) cold water is heavy (d) cold makes it pink
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) baking soda water (d) vinegar
27. 27.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a magnet (c) a funnel (d) a clean glass
29. 29.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a small bottle (c) sugar (d) a mirror
30. 30.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) very little fizzing (c) a huge eruption (d) the balloon bursts
31. 31.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) reflection (c) germination (d) transpiration
32. 32.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
33. 33.🫗 Which of these is done by evaporating? (a) salt from sea water (b) tea leaves from tea (c) bran from wheat flour (d) mud from water
34. 34.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a paper clip (c) a balloon (d) dry yeast
35. 35.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
36. 36.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) keep it away from eyes (c) shake it near your face (d) put it in your mouth
37. 37.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) turmeric powder (d) a funnel
39. 39.True or false: food colour does not dissolve in water. (a) False (b) True
40. 40.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False

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