What exactly is matter? Well in Ms.Chen's words it's...
"Anything that has mass and takes up space (volume)."
Basic Info on Matter:
-It is never created nor destroyed (only changed from one form to another)
-There are 3 states of matter:
1. Solid: rigid, does not change shape easily and experiences small change in volume when heated.
2. Liquid: takes the shape of the container and experiences slight changes in volume when heated.
3. Gas: Takes shape of container and experiences drastic changes in volume when heated.
Now that you have an idea of what matter is, it's time to go over different types of matter and their properties.
Red = Pure Substances --------- Blue = Mixtures
Pure Substances:
- One set of properties
- One kind of Particle
Element:
- Simplest form (can not be decomposed)
- Made of atoms
- Metals, Non-Metals, and Metalloids are all Elements.
Compound:
- Made of elements
- Chemically combined
- Smallest particle is a molecule
- Ionic and Covalent are compounds
Mixtures:
- More than one set of property and substance
- Physically combined
Homogeneous:
- Uniform throughout
- Appears to have only one component. (Ex. Solutions)
Heterogeneous:
- Not uniform
- Appears to have more than one component (Ex. Water + Oil)
- Suspensions and Mechanical Mixtures are Heterogeneous.
-------------------------------------------------------------------------------------------------------
Physical and Chemical Changes
You probably already know what the difference between physical and chemical change is, but just incase you don't remember, here they are.
Physical Change:
- No new substance is formed
- Chemical composition is not changed
- Reversible (Ex. You can freeze water and melt it back.)
Chemical Change:
- New substances are produced
- Irreversible (Ex. If you burn something, you can't unburn it.)
That's all the chemistry for today! Yay :) Thanks for reading, have a good day.
No comments:
Post a Comment