Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 672 · 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 is the odd one out? (a) tamarind water (b) lemon juice (c) detergent water (d) sugar water
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
3. 3.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) an empty bottle (c) baking soda (d) a mirror
4. 4.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
5. 5.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
6. 6.True or false: vinegar is something yeast needs. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) freezing water (b) dissolving salt (c) baking a cake (d) melting butter
8. 8.🔍 Which is the odd one out? (a) writing the message (b) cutting the lemon (c) letting the paper dry (d) dipping the cotton bud
9. 9.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
10. 10.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with a hot glue gun (c) with sharp wire (d) as tight as possible
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the same jar (b) time to make butter (c) the cream temperature
13. 13.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a balloon (d) white paper strips
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a magnet (d) turmeric powder
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) warm water (b) salt (c) vinegar (d) sunlight
19. 19.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) air (c) salt (d) water
20. 20.True or false: soap solution is needed for the turmeric test. (a) True (b) False
21. 21.True or false: a balloon is not needed for the secret lemon message. (a) False (b) True
22. 22.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) True (b) False
23. 23.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
24. 24.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
27. 27.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) sunlight (c) a few hours (d) a magnet
28. 28.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) rusting iron (d) browning lemon ink
29. 29.🛟 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
30. 30.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
32. 32.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) tamarind water (d) plain water
34. 34.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) rub it hard (d) add baking soda
35. 35.🌱 What comes out of a moong seed first when it sprouts? (a) a fruit (b) a flower (c) a tiny root (d) a thorn
36. 36.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
37. 37.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) magnetic (c) musical (d) chemical
38. 38.True or false: warm water is needed for growing salt crystals. (a) True (b) False
39. 39.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False

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