* Pure Substances: These are made up of only one type of particle.
* Elements: The simplest form of matter, found on the periodic table (like gold, oxygen, carbon).
* Compounds: Two or more elements chemically combined in a fixed ratio (like water, salt, sugar).
* Mixtures: Two or more substances physically combined, but not chemically bonded.
* Homogeneous Mixtures: The substances are evenly distributed (like saltwater, air).
* Heterogeneous Mixtures: The substances are not evenly distributed (like sand and water, a salad).
So, while all matter is either a pure substance or a mixture, not all matter is a mixture of elements and compounds. For example, pure gold is an element, not a mixture.
Let me know if you'd like to explore any of these concepts further!
