GEOG 2050 Chapter : Geography Chapter 3
Document Summary
Anything that occupies a space and has mass and volume. Atom- basic unit of matter: protons, neutrons, and electrons. Elements: atoms having the same chemical properties, same # of protons, e. g. , hydrogen (h) and oxygen (o) Atoms combine to form molecules: h2o (water) Atoms 2h + o = molecule h2o (matter; water) Matter- solids: a substance that resists changes of shape and volume, characterized by order or bonding to form a structure (rocks have fixed molecular structure, substance that flow freely in response to unbalanced forces. Matter- liquids: molecules move freely past one another as individuals or small groups, liquids exhibit pressure (force/area) Matter- liquids: density =mass/volume, water density 1. 0 kg/l. Ice density 0. 9 kg/l: water is different ice is less dense and floats in water* Matter- gases: substances that expand easily, rapidly, and indefinitely, filling all available space, and taking the shape of its container, atoms and molecules are in high motion, gases exert pressure = force/area.
