CHM 103 Lecture Notes - Sodium Bicarbonate, Atomic Number, Theory-Theory
Document Summary
Only one type of atom in a sample. Elements are chemically combined in a fixed proportion (ch. Elements and or compounds are physically mixed in variable proportions (sugar water) Homogeneous: a single phase, same throughout, a solution. Heterogeneous: some substance will refuse to mix (there will. Be distinct phases) (oil and water) (hydrocarbons hate water) Study of the physical and compositional changes of matter. Anything that has mass, occupies space and is made-up of atoms or parts of atoms. The amount of matter in an object. An object on earth is the same mass on the moon but not the same weight independent of the location of the object. Weight is a measure of gravitational force acting on an object. Weight depends on the location of the object. An object on earth (1lb) weighs . 17 lb on the moon. moon has the gravity of earth.
