Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 88 · 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.🧺 Do we need a magnet for sprouting seeds? (a) not needed (b) needed
2. 2.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
3. 3.True or false: mud from water is done by filtering. (a) False (b) True
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) salt (c) a battery cell (d) turmeric powder
5. 5.🧺 Which of these is needed for sprouting seeds? (a) yeast (b) a small bowl (c) turmeric powder (d) a battery cell
6. 6.🧺 Which of these is needed for making butter? (a) a bowl (b) a balloon (c) turmeric powder (d) a magnet
7. 7.True or false: table salt dissolves in water. (a) False (b) True
8. 8.True or false: a battery cell is needed for the fizzy balloon. (a) True (b) False
9. 9.True or false: baking soda water is an acid. (a) False (b) True
10. 10.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
11. 11.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a mirror (d) warm water
13. 13.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) a dropper or spoon (d) water
15. 15.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a comb (c) dry yeast (d) a balloon
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
17. 17.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the plastic (c) the rain (d) the leaves
18. 18.True or false: white paper is needed for the secret lemon message. (a) True (b) False
19. 19.True or false: a bowl is needed for making butter. (a) True (b) False
20. 20.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
22. 22.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
23. 23.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) True (b) False
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the plant (c) amount of water drops
26. 26.True or false: salt water is an acid. (a) False (b) True
27. 27.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) sugar (b) warm water (c) sunlight (d) time
29. 29.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a battery cell (c) a mirror (d) a magnet
30. 30.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
31. 31.True or false: bran from wheat flour is done by sieving. (a) False (b) True
32. 32.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it very salty (d) to make it fizz
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
34. 34.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) vinegar (d) soap solution
36. 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a rubber band (d) turmeric powder
37. 37.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) soap solution (d) a balloon
38. 38.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
40. 40.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it is magnetic (d) it can burn skin

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