Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 928 · 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 tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
2. 2.🧺 Which of these is needed for the yeast balloon? (a) a small bottle (b) a comb (c) a battery cell (d) a magnet
3. 3.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
4. 4.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
5. 5.🔍 Which is the odd one out? (a) baking a cake (b) rusting iron (c) cooking an egg (d) dissolving salt
6. 6.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) steam (c) smoke (d) carbon dioxide gas
7. 7.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a battery cell (c) cold water to rinse (d) a jar with a tight lid
8. 8.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it takes much longer (c) it makes salt (d) it turns pink
9. 9.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) lemon juice (c) an adult with an iron (d) yeast
10. 10.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) putting the iron away (c) writing the message (d) cutting the lemon
11. 11.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they glow (c) they sprout faster (d) they do not sprout
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is what we measure. (a) True (b) False
15. 15.True or false: putting the iron away is a job a child can do. (a) True (b) False
16. 16.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) make seeds (c) make food in sunlight (d) hold the plant in soil
17. 17.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
18. 18.True or false: sunlight is needed for the leafy bag test. (a) False (b) True
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a balloon (d) a piece of string
20. 20.⚖️ 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) amount of water drops (b) sun or shade (c) the time we wait
21. 21.🧺 Do we need a comb for the fizzy balloon? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a jar with a tight lid (c) fresh cream (d) a balloon
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a tray for spills (c) vinegar (d) a seed
25. 25.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
26. 26.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
27. 27.True or false: salt water is an acid. (a) False (b) True
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same glass (c) the filter material
29. 29.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) both the same (c) the hot sunny day (d) the cool cloudy day
30. 30.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) size of the balloon (c) the water temperature (d) the amount of yeast
32. 32.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
33. 33.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
34. 34.🔍 Which is the odd one out? (a) rusting iron (b) baking a cake (c) folding paper (d) cooking an egg
35. 35.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it gets wet (c) it is too big (d) it can block breathing
36. 36.🔍 Which is the odd one out? (a) melting butter (b) cooking an egg (c) melting ice (d) freezing water
37. 37.True or false: sugar water is an acid. (a) True (b) False
38. 38.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
39. 39.🌱 What comes out of a moong seed first when it sprouts? (a) a thorn (b) a fruit (c) a tiny root (d) a flower
40. 40.🌱 Which of these is needed for a seed to sprout? (a) salt (b) air (c) sunlight (d) soil

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