Hi! teachers and students!
My first work of Physics and Chemistry is of the matter.
The matter is a one part that separates for to analyze the substances that it contais.

•State of the matter:
- Solid.
- Liquid.
-Gaseous.

•The aspect of matter:
-Heterogeneus: is this that don't represent one aspect uniform.
-Homogeneus: is this that represent one aspect uniform.

•Simple substances and compounds:
-Substance simple is one substance pure that is formed for only type of element.
-Compounds is one substance pure formed for two or more combined elements.