1. Examples; Coffee and tea
2. Pure Substances
2.1. no matter what kind of tests are used, or how many times it's divided, an element will always stay the same because it has only one molecule.
2.2. Elements
2.2.1. metals
2.2.1.1. Shiny. Good conductors of thermal energy and electric current. Most metals are malleable and ductile.
2.2.1.1.1. Examples; there are 84 metals in the periodic table, some examples you might be familiar with are lead, tin, and silver.
2.2.2. nonmetals
2.2.2.1. Dull and poor conductors of thermal energy and electric current.
2.2.2.1.1. Examples; there are less than a fourth number of non metals than there are metals at 17. Some nonmetals you might be familiar with are chlorine, sulfur, and nitrogen.
2.2.3. metalloids
2.2.3.1. Semiconductors. properties of both of both metals and nonmetals.
2.2.3.1.1. Examples;
2.3. Compounds
2.3.1. compounds are two elements that are chemically combined to make a new substance.
2.3.1.1. Examples; Glucose, alcohol, and baking soda
3. characteristic proparties
3.1. Characteristic properties are how you identify an pure substance.
3.1.1. physical characteristic properties
3.1.1.1. some physical characteristic properties are melting point, boiling point, and desity
3.1.2. chemical characteristic properties
3.1.2.1. some chemical characteristics properties are reactivity to acid and flammability
4. Mixtures
4.1. mixtures are two pure substances that are phically combined and can be seperated again
4.1.1. Homogeneous
4.1.1.1. A mixture. Has a combination of substances in which the appearance and properties are the same throughout.
4.1.1.1.1. Examples; coffee and tea
4.1.2. hertogeneous
4.1.2.1. A mixture. Has a combination of substances in which different components are easily discovered.
4.1.2.1.1. Examples; Trail mix, blood, salt water, and granite.