Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 972 · 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 of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) baking soda
2. 2.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) cooking an egg (b) baking a cake (c) milk turning to curd (d) folding paper
4. 4.🔍 Which is the odd one out? (a) curd (b) vinegar (c) orange juice (d) plain water
5. 5.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
6. 6.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
7. 7.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
8. 8.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
9. 9.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
10. 10.🧺 Which of these is needed for the leafy bag test? (a) sunlight (b) a battery cell (c) turmeric powder (d) a magnet
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) a spoon (d) warm water
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) True (b) False
13. 13.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) ironing the paper (c) reading the message (d) plugging in the iron
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
15. 15.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🧺 Which of these is not needed for making butter? (a) a mirror (b) a jar with a tight lid (c) a bowl (d) cold water to rinse
19. 19.True or false: a battery cell is not needed for sprouting seeds. (a) True (b) False
20. 20.True or false: sugar is needed for the yeast balloon. (a) False (b) True
21. 21.🧺 Which of these is needed for making butter? (a) a battery cell (b) yeast (c) fresh cream (d) a magnet
22. 22.🌱 Which of these is needed for a seed to sprout? (a) water (b) soil (c) sunlight (d) sugar
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) True (b) False
24. 24.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) dry yeast (d) a mirror
25. 25.🍋 Why does the lemon writing turn brown with heat? (a) the iron is brown (b) paper turns lemony (c) heat adds colour (d) the juice scorches first
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
27. 27.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a battery cell (c) soap solution (d) turmeric powder
28. 28.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a clear plastic bag (c) a battery cell (d) a mirror
29. 29.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a seed (c) a battery cell (d) a tray for spills
31. 31.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
32. 32.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
33. 33.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a mirror (b) cotton wool (c) a small bowl (d) water
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) True (b) False
35. 35.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they float apart (c) they react (d) they become magnets
36. 36.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) warm water (c) a small bottle (d) a paper clip
39. 39.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it is too big (d) it changes colour
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we change it (c) we keep it the same

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