Endo/Exo Flashcards
(22 cards)
Elements
Elements consist of a single atom
Compounds
Compounds consist of multiple atoms
Mixtures
Mixtures consist of multiple elements
Heterogenous Mixtures
Mixtures that contain visibly different parts
Homogenous Mixtures
Mixtures that do not contain visibly different parts
Examples of a Heterogenous Mixture
Salad
Cinnamon and Sugar
Trail Mix
Examples of Homogenous Mixture
Salt Water
Milk
KoolAid
Sprite
Formation of a Compound is caused by…
A Chemical Reaction
Formation of a Mixture is caused by…
Mixing of the Ingredients
Entropy
Measurement of amount of disorder/chaos in a system.
Endothermic Reaction
A chemical reaction that absorbs heat and has a positive change in enthalpy
Exothermic Reaction
A chemical reaction that releases heat and has a negative change in enthalpy
Reaction Diagram
Describes the movement of energy in the system
The Law of Conservation of Energy
Energy is neither created or destroyed
Enthalpy of a system
the heat content of a system at constant pressure
kinetic energy
energy of an object in motion
potential energy
energy an object has based on its position
Enthalpy
the measure of the internal energy of a thermodynamic system. Also known as the heat of the Reaction.
Matter
anything that has mass and volume (takes up space)
All natter is compsed of what?
atoms
Matter can be classified as a … or…
pure substance or mixture
subscript
shows how many of each element (H2O)
