Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 995 · 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.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) a tray for spills (d) a comb
2. 2.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) dissolving salt (c) melting butter (d) folding paper
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
7. 7.🔍 Which is the odd one out? (a) reading the message (b) ironing the paper (c) dipping the cotton bud (d) writing the message
8. 8.True or false: a battery cell is needed for the yeast balloon. (a) False (b) True
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) False (b) True
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the same bottle (b) size of the balloon (c) spoons of baking soda
13. 13.🔍 Which is the odd one out? (a) melting butter (b) dissolving salt (c) freezing water (d) rusting iron
14. 14.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
15. 15.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) salt crystals (c) nothing at all (d) tiny insects
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.True or false: carry water upward is a job of the stem. (a) False (b) True
19. 19.⚖️ 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) True (b) False
20. 20.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) handpicking (d) sieving
21. 21.🧺 Which of these is needed for making butter? (a) a balloon (b) a bowl (c) a battery cell (d) a mirror
22. 22.True or false: orange juice is neutral. (a) False (b) True
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it turns yellow (c) it grows much faster (d) it bursts at once
25. 25.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
26. 26.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
27. 27.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it turns pink (b) it takes much longer (c) it is much faster (d) it makes salt
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
30. 30.True or false: a bowl is not needed for making butter. (a) False (b) True
31. 31.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is smaller (c) it turns to bread (d) the balloon is bigger
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a balloon (b) a jar with a tight lid (c) a timer (d) fresh cream
33. 33.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it changes colour (c) it can block breathing (d) it gets wet
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
35. 35.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) warm water (d) sunlight
36. 36.🧺 Do we need a timer for making butter? (a) needed (b) not needed
37. 37.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) almost nothing (d) dark brown words
38. 38.🌱 What comes out of a moong seed first when it sprouts? (a) a flower (b) a fruit (c) a tiny root (d) a thorn
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) sugar (d) a mirror
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False

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