Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 429 · 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.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a magnet (c) cold water to rinse (d) fresh cream
3. 3.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) rinse with clean water (d) ignore it
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the amount of cream (b) the cream temperature (c) time to make butter (d) how hard we shake
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is what we measure. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) sun or shade (b) amount of water drops (c) the kind of plant (d) the size of the plant
8. 8.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) the same place (c) how many seeds sprout (d) wet or dry cotton
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.True or false: bran from wheat flour is done by filtering. (a) True (b) False
12. 12.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) leaves (c) flower (d) roots
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the same bottles (b) the amount of sugar (c) size of the balloon (d) the water temperature
14. 14.True or false: melting butter is a change that cannot be undone. (a) False (b) True
15. 15.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a battery cell (d) a mirror
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
18. 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) a clear plastic bag (d) yeast
19. 19.True or false: vinegar keeps turmeric yellow. (a) False (b) True
20. 20.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) wet seeds in the dark (d) seeds on dry cotton
21. 21.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
22. 22.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: salt is not needed for growing salt crystals. (a) False (b) True
24. 24.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
25. 25.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a thorn (c) a flower (d) a fruit
26. 26.🔍 Which is the odd one out? (a) browning lemon ink (b) baking a cake (c) cooking an egg (d) freezing water
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
29. 29.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) sugar (c) warm water (d) a small bottle
30. 30.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
31. 31.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
32. 32.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it turns to ice (c) it glows in the dark (d) lots of fizzy bubbles
33. 33.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) still runny cream (c) butter lumps (d) cheese
34. 34.🧺 Which of these is not needed for making butter? (a) a timer (b) cold water to rinse (c) a jar with a tight lid (d) yeast
35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
37. 37.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) reading the message (c) putting the iron away (d) ironing the paper
38. 38.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
40. 40.True or false: browning lemon ink is a change that can be undone. (a) True (b) False

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