Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 319 · 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.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) salt
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the amount poured (c) how clear the water is
4. 4.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
5. 5.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
6. 6.True or false: a battery cell is needed for sprouting seeds. (a) False (b) True
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) the same glass (d) the filter material
8. 8.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the amount of vinegar (d) the same bottle
10. 10.🧺 Which of these is not needed for making butter? (a) a mirror (b) cold water to rinse (c) a bowl (d) a jar with a tight lid
11. 11.🔍 Which is the odd one out? (a) freezing water (b) melting ice (c) folding paper (d) browning lemon ink
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) True (b) False
13. 13.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a battery cell (c) a few days (d) moong seeds
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🫧 Which of these is neutral? (a) lemon juice (b) salt water (c) orange juice (d) detergent water
19. 19.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) sieving (d) evaporating
20. 20.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) plugging in the iron (c) writing the message (d) cutting the lemon
21. 21.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) food colour (d) sand
22. 22.🪴 Which of these is a job of the roots? (a) carry water upward (b) give out water vapour (c) take in water from soil (d) make food in sunlight
23. 23.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
24. 24.🔍 Which is the odd one out? (a) melting butter (b) melting ice (c) folding paper (d) rusting iron
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) yeast (d) sand and pebbles
26. 26.🫧 Which of these is an acid? (a) sugar water (b) orange juice (c) salt water (d) plain water
27. 27.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the same place
28. 28.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
29. 29.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so cream does not spill (c) so it turns yellow (d) so air gets out
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) more butter forms (c) no butter forms (d) it turns to cheese
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a piece of string (d) a shallow dish
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) False (b) True
34. 34.True or false: sugar water is neutral. (a) False (b) True
35. 35.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) baking soda (d) sand
36. 36.True or false: salt is needed for a seed to sprout. (a) True (b) False
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) leaves stay behind (d) tea stays behind
38. 38.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
39. 39.🪴 Which part of a plant does this job: carry water upward? (a) leaves (b) flower (c) stem (d) roots
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it

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