Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 241 · 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.True or false: take in water from soil is a job of the roots. (a) True (b) False
2. 2.🪴 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) hold up the leaves
3. 3.⚖️ 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) the kind of plant (b) amount of water drops (c) sun or shade
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
5. 5.True or false: water is needed for the turmeric test. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) letting the paper dry (b) writing the message (c) ironing the paper (d) reading the message
7. 7.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
8. 8.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) plain water (d) detergent water
9. 9.True or false: glucose powder does not dissolve in water. (a) False (b) True
10. 10.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
11. 11.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) shake it near your face (c) keep it away from eyes (d) seal it in a glass jar
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
13. 13.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) throw them at friends (c) never put seeds in mouth (d) feed them to pets
14. 14.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a battery cell (b) white paper (c) a cotton bud (d) lemon juice
16. 16.🔍 Which is the odd one out? (a) dissolving salt (b) melting ice (c) folding paper (d) milk turning to curd
17. 17.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
18. 18.🌱 Which of these is not needed for a seed to sprout? (a) sunlight (b) warmth (c) air (d) water
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) how dark the writing is (c) the kind of juice (d) the iron setting
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) dissolving salt (c) freezing water (d) folding paper
22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) sawdust (d) sand
23. 23.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
24. 24.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) False (b) True
27. 27.🛟 What should you do after touching soil or seeds? (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
28. 28.🪴 Which of these is a job of the flower? (a) hold the plant in soil (b) hold up the leaves (c) make food in sunlight (d) make seeds
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a battery cell
30. 30.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a mirror (c) sunlight (d) turmeric powder
31. 31.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
32. 32.⚖️ 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 same muddy water (c) how clear the water is
33. 33.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
34. 34.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
35. 35.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it very salty (c) to make it fizz (d) to change its colour
36. 36.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) curd (d) detergent water
38. 38.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
39. 39.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) browning lemon ink (d) freezing water
40. 40.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they sprout faster (c) they do not sprout (d) they glow

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