Sem 1 Final: Extra Study Flashcards
What is not matter?
Energy: light, sound, heat
Intensive Properties
properties that DON’T change based on amount of substance present
Extensive Properties
properties that DO change based on amount of substance present
Miscibility
ability for substances to mix and make a homogenous mixture
Conservation of Mass? Conservation of Energy?
Mass: in physical and chemical changes mass is not created or destroyed
Energy: in physical and chemical changes energy is not created or destroyed
What changes require an exchange of energy?
Both physical and chemical changes require an exchange of energy.
Filtration
Passing a mixture through a barrier that prevents some parts of the mixture from passing through
What property does filtration exploit?
Particle size
Decanting
Carefully pouring off the liquid layer in a mixture to separate it from a solid layer.
What property does decanting exploit?
Solubility and density.
Centrifuge
Spinning a mixture in order to separate it into layers
What property does the centrifuge exploit?
Density
Distillation
Heating a mixture of miscible liquids until one boils, becomes a vapor, and condenses in a separate location.
What property does distillation exploit?
Boiling point
Chromatography
Separating the components of a homogeneous mixture by allowing a mobile phase to move them thru a stationary phase.
