Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 933 · 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.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: a funnel or spoon is needed for the fizzy balloon. (a) False (b) True
3. 3.True or false: moong seeds is needed for sprouting seeds. (a) False (b) True
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
6. 6.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) carry water upward (c) make seeds (d) hold the plant in soil
7. 7.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) writing turns green (c) it gets darker (d) writing stays faint
8. 8.⚖️ 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 the one thing we change. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper 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 the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the amount of vinegar (d) size of the balloon
13. 13.True or false: make food in sunlight is a job of the roots. (a) True (b) False
14. 14.True or false: lemon juice is neutral. (a) True (b) False
15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
16. 16.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
17. 17.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) warm, not hot (d) very salty
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) muddy water (d) sand and pebbles
19. 19.🔍 Which is the odd one out? (a) vinegar (b) salt (c) sugar (d) a magnet
20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
21. 21.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a magnet (c) an adult with an iron (d) a cotton bud
22. 22.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) sugar (c) an empty bottle (d) a funnel or spoon
23. 23.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) False (b) True
26. 26.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
27. 27.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) the youngest child (c) only an adult (d) whoever is fastest
28. 28.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
29. 29.True or false: fresh cream is not needed for making butter. (a) True (b) False
30. 30.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) the ink is magnetic (c) it turned into air (d) dry juice is see-through
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) False (b) True
32. 32.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the leaves (c) the fruits (d) the roots
33. 33.True or false: sugar is needed for the yeast balloon. (a) True (b) False
34. 34.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a mirror (b) a small bottle (c) a balloon (d) warm water
36. 36.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) time (d) sugar
38. 38.🧺 Which of these is not needed for sprouting seeds? (a) water (b) a balloon (c) cotton wool (d) a small bowl
39. 39.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns to cheese (d) it turns blue
40. 40.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) sugar water (d) soap solution

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