Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 869 · 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.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so air gets out (c) so cream does not spill (d) so it gets hot
2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a pulley (d) a magnet
3. 3.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
4. 4.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the light we look in
6. 6.🔍 Which is the odd one out? (a) sugar (b) time (c) warm water (d) sunlight
7. 7.True or false: baking soda does not dissolve in water. (a) False (b) True
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) curd (b) soap solution (c) vinegar (d) lemon juice
11. 11.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the kind of plant (b) amount of water drops (c) the time we wait (d) sun or shade
13. 13.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) moong seeds (c) yeast (d) a battery cell
14. 14.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
15. 15.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) fish make it (d) salt rains down
16. 16.True or false: carry water upward is a job of the leaves. (a) True (b) False
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
19. 19.🔍 Which is the odd one out? (a) cutting the lemon (b) reading the message (c) plugging in the iron (d) putting the iron away
20. 20.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
21. 21.🍞 Why does yeast work slowly in cold water? (a) cold makes it pink (b) cold kills sugar (c) cold slows yeast down (d) cold water is heavy
22. 22.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) time (b) vinegar (c) sugar (d) warm water
24. 24.True or false: a mirror is needed for the leafy bag test. (a) False (b) True
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) a funnel or spoon (c) a balloon (d) baking soda
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.True or false: freezing water is a change that cannot be undone. (a) False (b) True
28. 28.🧺 Do we need yeast for sprouting seeds? (a) needed (b) not needed
29. 29.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
30. 30.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) sunlight
31. 31.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a clear plastic bag (c) yeast (d) a magnet
32. 32.True or false: salt water keeps turmeric yellow. (a) True (b) False
33. 33.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
34. 34.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rub it hard (c) rinse with clean water (d) add baking soda
35. 35.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
36. 36.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) only an adult (c) any child (d) whoever is fastest
37. 37.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) soap solution (d) a balloon
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
40. 40.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) glucose powder (d) chalk powder

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