|
||||||||||||||||||||||||||
|
Chem. 10 (Introductory General Chemistry) by Ebbing. Chapter 1
Chemistry is a systematic study of the nature of matter. A matter is composed of extremely small particles, called molecules and molecules are composed of atoms. Chemical reactions (Chemical changes) Physical processes (Physical changes)
Chemical reactions (chemical changes) A process in which the properties of matter can be changed a new compound (substance) is obtained. The new compound can not be converted to starting materials. Chapter 2 Measurements: Mass Measured by balance Mass : a quantity of matter and stays constant Weigh : the force exerted by earth gravity on matter. Weigh of a matter is not constant and varied with gravity. Weigh is proportional to mass. Two objects have same mass if they are at the same point of earth with same weigh. Chapter 3 Matter and energy States of matter Solids : having fixed shape and fixed volume Liquids: having no fixed shape and fixed volume Gases: having no fixed shape and no fixed volume
Chapter 4 Atoms, molecules and ions Atoms Dalton’s atomic theory A matter is made of extremely small particles called atoms. Atoms can not be broken into smaller particles. Combination of atoms gives molecules and molecules make compounds (matter). Molecules can be broken into atoms. A compound has constant composition. Atoms Dalton’s atomic theory A matter made of identical atoms is called element. The atoms of a given element are different from those of any other element. Atoms of one element can combine with atoms of other elements to make compounds. A given compound has the same (constant) relative numbers and types of atoms. In a chemical reaction atoms are not destroyed or created, just rearrangement of atoms present. Chapter 5Chemical Formulas and Names Ionic Compounds I-Binary Ionic Compounds
|
