Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 410 · 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: salt is not needed for a seed to sprout. (a) True (b) False
2. 2.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to make it fizz (d) to cool the water
3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) water (c) moong seeds (d) a magnet
5. 5.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
6. 6.⚖️ 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) how clear the water is (c) the amount poured
7. 7.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) glucose powder
8. 8.True or false: a balloon is not needed for the yeast balloon. (a) False (b) True
9. 9.⚖️ 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 kept the same. (a) False (b) True
10. 10.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
11. 11.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) the youngest child (c) only an adult (d) any child
12. 12.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt eats water (d) salt grows roots
13. 13.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
14. 14.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
15. 15.⚖️ 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 the one thing we change. (a) False (b) True
16. 16.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
18. 18.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
19. 19.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
20. 20.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) soap solution (d) lemon juice
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a dropper or spoon (d) a battery cell
22. 22.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
23. 23.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
24. 24.🔍 Which is the odd one out? (a) water (b) warmth (c) soil (d) air
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) the amount of cream (c) time to make butter
26. 26.🔍 Which is the odd one out? (a) cutting the lemon (b) dipping the cotton bud (c) writing the message (d) letting the paper dry
27. 27.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) writing stays faint (c) writing turns green (d) it gets darker
28. 28.🧂 Which of these does not dissolve in water? (a) table salt (b) small pebbles (c) glucose powder (d) baking soda
29. 29.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) True (b) False
31. 31.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) it turns to ice (c) it glows in the dark (d) nothing at all
32. 32.True or false: lemon juice is not needed for the secret lemon message. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) folding paper (b) rusting iron (c) freezing water (d) dissolving salt
34. 34.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
35. 35.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) yes, a new gas forms (c) no, nothing changes (d) it is only dissolving
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a balloon (c) a jar with a tight lid (d) cold water to rinse
37. 37.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
38. 38.⚖️ 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
39. 39.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) detergent water (d) curd
40. 40.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) steam (c) carbon dioxide gas (d) air from outside

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