Lesson 62 of 84 ยท Properties of Matter
Experimentโญ 30 XP๐งช Potion KitchenPhase Changes in Everyday Life (Part 2)
Properties of Matter.
๐ฏ Your mission
Set it up. Test it. Be amazed.
โก The twist
If it bubbles, something invisible is escaping.
Mind = Blown
๐งช If you could remove all the empty space from atoms, the entire human race would fit in a sugar cube.
Make a hypothesis first
Guess: will the fizz be loud, soft, or none at all?
What You'll Learn
The law of definite proportions states that a compound always contains the same elements in the same ratio by mass. Water is always 11.2% hydrogen and 88.8% oxygen.
Key Words
- temperature
- melting point
Materials Needed
- plastic bottles
- balloons
- measuring cups
- paper towels
- thermometer
Safety First
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Look at the vocabulary words and write a definition for each in your own words.
Create a density column: carefully layer honey, dish soap, water, vegetable oil, and rubbing alcohol in a tall glass. Drop small objects in to test where they float.
Compare the before and after states.
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3Which is a sign of a chemical change?
Where you see this in real life
This is happening in your kitchen right now โ every time food cooks.
Stretch Challenge
Try this in real life this week.
Find one ingredient in a snack and look up what it does.
For the dinner table
โWhat's something we cook that mixes things together this way?โ
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Checkout complete lesson on Properties of Matter for 4th Grade
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