Substances
Pure Substances are
A matter that always has the exact same composition and properties.
Mixtures are
A combination of two or more pure substances.
Solutions are
Substances that dissolve and form a homogeneous mixture.
Gas has
No definite shape or volume.
Physical Properties are
Characteristics of a substance that can be observed without changing the substance.
Elements are
Substances that can NOT be broken down into anything smaller.
Heterogeneous mixtures are
Substances that are mostly solid and are not mixed well.
Suspensions are
Heterogeneous mixtures that separate into layers over time.
Liquid has
Definite volume but not a definite shape.
Viscosity is
The tendency of a liquid to resist flowing.
Compounds are
Substances that are made up of two or more elements.
Immiscible mixtures are
Two or more liquids that don't mix into each other.
Colloids are
Mixtures that contain particles that are intermediate in size between the small and large particles. Parts can't be filtered or separated.
Solid has
Definite shape and volume.
Malleability is
The ability of a solid to be hammered or shaped without shattering.
Molecules are
Molecules are made up of different elements and or compounds.
Homogeneous mixtures are
Substances that ARE mixed well
AKA= Solutions
Define Distillation
Separates materials based on their boiling points.
Property is
Something that describes matter.
Hardness is
To determine which is harder based on which scratches the other.
Define Chemical and Physical Change
Physical Change: When a substance's appearance changes- it looks different, but the atoms are not changed or rearranged.
Chemical Change: When a substance changes into one or more NEW substances.
Miscible mixtures are
Two or more liquids that DO dissolve into each other.
Define Filtration
Separates materials based on the size of their particles.
Define Chemistry and Matter
Chemistry: Is the study of matter and how it changes.
Matter: Anything that has mass and volume.
Define Density and Conductivity
Density: The mass per unit volume of a substance.
Conductivity: Materials' ability to allow heat to flow.