Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 481 · 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 not needed for the turmeric test? (a) a magnet (b) soap solution (c) lemon juice (d) turmeric powder
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) the kind of balloon (c) size of the balloon (d) spoons of baking soda
4. 4.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
5. 5.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) salt crystals (c) tiny water drops (d) tiny insects
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) a magnet (b) vinegar (c) sunlight (d) sugar
8. 8.🔍 Which is the odd one out? (a) sugar (b) soil (c) sunlight (d) air
9. 9.🌱 Which of these is not needed for a seed to sprout? (a) air (b) sunlight (c) warmth (d) water
10. 10.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
11. 11.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) the air (c) food stored in the seed (d) the cotton wool
12. 12.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.True or false: a timer is not needed for making butter. (a) False (b) True
16. 16.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
17. 17.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) salt water (d) vinegar
18. 18.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
19. 19.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) the water temperature (d) size of the balloon
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) water (c) turmeric powder (d) cotton wool
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
24. 24.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
25. 25.🍞 Does yeast need warm water to make gas? (a) yeast needs it (b) yeast does not need it
26. 26.🧺 Which of these is needed for the leafy bag test? (a) a clear plastic bag (b) a battery cell (c) a magnet (d) yeast
27. 27.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to make bread rise (c) to wash dishes (d) to colour rice
28. 28.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) the amount of salt (c) days to see crystals (d) the kind of salt
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a comb (d) lemon juice
32. 32.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
33. 33.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
34. 34.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a battery cell (c) cotton wool (d) a small bowl
35. 35.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) food colour (d) chalk powder
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a bowl (c) fresh cream (d) a timer
37. 37.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) turmeric powder (c) sunlight (d) a few hours
38. 38.True or false: sugar water is an acid. (a) False (b) True
39. 39.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
40. 40.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) lumps of butter (c) clear water only (d) sugar crystals

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