2.1 Vocab Flashcards
memorize these vocab words
Matter
Anything that has mass & occupies space
Mass
The amount of matter contained in a thing
Extensive Properties
Qualities dependent on the amount of materials
Ex: Mass,volume,electrical resistance
Intensive properties
Qualities that do not depend on the amount of material
Ex: Density, melting point
Physical Change
Change of form
Physical Property
Examples of physical change
Chemical Change
Changes into a new substance
Chemical Property
Describes chemical change or the tendency of a chemical to react
Kinetic energy
Any form of energy that cannot be stored
Mechanical energy
Types of motion
Ex: Transnational, rotational, & vibrational
Thermal Energy
The energy contained within a system that is responsible for its temperature
Temperature
A measure of the average kinetic energy of the atoms or molecules in the system
Heat
Energy transferred from one body to another because difference in temperature
Kinetic Molecular Theory
What happens to matter when the kinetic energy of particles changes
Vapor
The gas formed by a substance when boiling
Boiling Point
Substances highest possible temperature in liquid state
Volatile Substances
Substances that readily evaporate or evaporate at high rates
Heat of Fusion
The amount of heat required to melt a specific amount of a substance at its melting point
Potential Energy
Stored energy
Heat of Vaporization
Amount of heat required to evaporate a specific amount of a substance at its boiling point
Reactivity
Whether a substance reacts or its reaction rate
Heat of Formation
Heat released when a substance is formed from its elements
Heat of Combustion
Heat released when a specific amount of a substance undergoes complete combustion with oxygen
Atom
The smallest part of a substance that cannot be broken down chemically
