You will now create an outline for your final assignment.
In this lesson you learned about weight, density, solubility and boiling point, and how these physical properties can be used to define different types of matter. You took notes on almost every page of the lesson, and now it's time to use them, as well as any other evidence presented, to compose your own multimedia project, or write a final essay, in which you describe and summarize all of that knowledge you've collected.
As you compose your project, try to think of ways to connect, either graphically or in writing, the ways in which properties are observed, measured and used to define types of matter.
Once again, be sure to include definitions, descriptions and comparisons.
If you create a multimedia project that requires a social-media, video, or audio platform that is not directly offered by this lesson, you will need to post it to a file-sharing site (Dropbox, Google Drive, and Microsoft Teams are examples) and then upload the link to the Write It plug-in. Here are some ideas for what you might want to do:
Use Organize It to outline your ideas. You can review your notes in “My Work” as well as any of the following videos and glossary terms.
Keyboard Shortcut | Action |
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Space | Pause/Play video playback |
Enter | Pause/Play video playback |
m | Mute/Unmute video volume |
Up and Down arrows | Increase and decrease volume by 10% |
Right and Left arrows | Seek forward or backward by 5 seconds |
0-9 | Fast seek to x% of the video. |
f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
c | Press c to toggle captions on or off |
The world around us is made of matter. And this matter is physical--we can hold it, feel it, smell it because it is made up of physical particles (atoms & molecules).
And because of this, matter has physical properties that we can observe and measure. Things like how much it weighs, how much space it takes up, or what color it is.
Matter can also be defined by its physical properties. Gold is, well, gold colored. Helium is less dense than air. Silver conducts electricity like a champ.
Matter can also be defined by the way it physically changes. Solid water turns to liquid water at 32°F. Sugar can dissolve into a glass of lemonade (203.9 grams of sugar in 100 mL of water at 68°F). And believe it or not, gold can boil (4,892°F).
Some physical changes are a result of a change in energy. Add or take away energy from water, and it changes states (solid, liquid, gas). But these changes don’t change the chemical makeup of the matter.
By observing and measuring these physical properties (list: density, volume, mass, weight) and points of physical change (boiling point, melting point, solubility) we can learn a whole heaping lot about the matter that makes up the universe.
Boiling Point: The temperature at which a liquid becomes a gas.
Density: The amount of mass within a given amount of volume.
Hydrogen is less dense than air, which is why helium-filled balloons rise.
Dissolve: The breaking apart of one substance such as salt, into another substance, such as water. Mass: The amount of material contained in an object, such as gold.
Keyboard Shortcut | Action |
---|---|
Space | Pause/Play video playback |
Enter | Pause/Play video playback |
m | Mute/Unmute video volume |
Up and Down arrows | Increase and decrease volume by 10% |
Right and Left arrows | Seek forward or backward by 5 seconds |
0-9 | Fast seek to x% of the video. |
f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
c | Press c to toggle captions on or off |
Matter is physical and has properties that can be measured. Turns out that those properties and the points at which substances physically change are a very good way to define matter.
Gold, for instance, has properties that stay the same no matter how much --or how little-- gold you have. One ounce and one ton are both a certain color (gold), have the same density (19.32 grams per cubic centimeter) and dissolve in a solvent the same way (solubility).
And one ounce and one ton of gold both physically change the same way when energy is added or taken away. They both melt at the same temperature and boil at the same temperature.
These physical properties (melting point/boiling point/solubility/density) and their specific values are due to the physical arrangement of gold atoms-- regardless of how much you have.
There are other properties-- such as volume, mass, weight-- that can also be measured, but these measurements depend on the amount of the substance you have.
Hydrogen. Helium, salt, sugar, water-- all matter has physical properties based on its molecular make-up that we can measure and observe.
Matter: Any physical substance or material that takes up space and has mass. If you can put it in a jar, it’s matter.
Melting Point: The temperature at which a solid becomes a liquid.
Volume: How much space a substance takes up.
Weight: The downward force of gravity on an object.