Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 421 · 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 needed for growing salt crystals? (a) a piece of string (b) yeast (c) a mirror (d) a magnet
2. 2.True or false: salt is something yeast does not need. (a) True (b) False
3. 3.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) sunlight (c) a battery cell (d) vinegar
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
5. 5.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
6. 6.📘 What do we call a seed starting to grow? (a) pollination (b) condensation (c) germination (d) evaporation
7. 7.True or false: yeast is needed for the turmeric test. (a) False (b) True
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) turmeric powder (c) a piece of string (d) a shallow dish
9. 9.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) keep it away from eyes (d) put it in your mouth
10. 10.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
11. 11.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
12. 12.🍋 Secret message: who does this step — reading the message? (a) an adult does it (b) a child can do it
13. 13.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) salt water (d) orange juice
14. 14.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
15. 15.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) a shallow dish
17. 17.True or false: sunlight is not needed for a seed to sprout. (a) True (b) False
18. 18.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
19. 19.⚖️ 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
20. 20.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) the amount of cream (c) time to make butter
21. 21.🔍 Which is the odd one out? (a) ironing the paper (b) letting the paper dry (c) dipping the cotton bud (d) reading the message
22. 22.🍞 Why does yeast work slowly in cold water? (a) cold makes it pink (b) cold slows yeast down (c) cold kills sugar (d) cold water is heavy
23. 23.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a flower (c) a fruit (d) a thorn
25. 25.True or false: cold water to rinse is needed for making butter. (a) True (b) False
26. 26.⚖️ 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
27. 27.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
29. 29.True or false: make food in sunlight is a job of the leaves. (a) False (b) True
30. 30.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) baking soda water (d) vinegar
31. 31.⚖️ 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) False (b) True
32. 32.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) dark brown words (d) blue words
33. 33.True or false: a mirror is needed for making butter. (a) False (b) True
34. 34.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds on wet cotton (c) seeds in the freezer (d) seeds on dry cotton
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the amount of water (c) the water temperature
36. 36.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) a balloon (c) turmeric powder (d) a battery cell
37. 37.True or false: a bowl is not needed for making butter. (a) True (b) False
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
39. 39.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
40. 40.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) flower (d) leaves

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids