1. Elements:
* Definition: The simplest form of matter that cannot be broken down into simpler substances by chemical means.
* Examples: Gold (Au), Oxygen (O), Hydrogen (H), Carbon (C)
2. Compounds:
* Definition: Substances formed by the chemical combination of two or more different elements in a fixed ratio.
* Examples: Water (H₂O), Sodium chloride (NaCl), Carbon dioxide (CO₂)
Here's a simple breakdown:
| Category | Definition | Examples |
|---|---|---|
| Elements | Simplest form of matter | Gold, Oxygen, Hydrogen, Carbon |
| Compounds | Combination of two or more elements | Water, Sodium chloride, Carbon dioxide |
Key Points:
* Elements are found on the periodic table.
* Compounds can be broken down into their constituent elements by chemical reactions.
* Pure substances have a fixed composition and unique properties.
Let me know if you'd like more information about specific elements or compounds!
