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20 Cards in this Set

  • Front
  • Back
What is a mixture?
A mixture is a combination of two substances where each substance contains it's own identity.
Homogeneous
Applies to: Mixture
Matter that consists of a single phase. Hint: homo-same
Heterogeneous
Applies to: Mixture
Matter that consists of more than one phase. Examples: sand, rocks, and wood.
Hint: hetero-different
Define the characteristics of a substance.
A substance can not be separated into simpler components by physical changes.
Physical Changes
A substance can change it's physical appearance but the chemical make-up of the substance will not change.
Examples of Properties:
Boiling point
melting point
mass, volume, density.
Solutions
homogeneous mixtures are called solutions.
Solute
something that is dissolved into a solvent.
Solvent
something that dissolves a solute.
Extensive properties
depend of mass and volume of a substance.
Intensive properties
do NOT depend on the amount of substance. Ex. density (density= mass/volume)
Define: compound
A compound is able to be separated into simpler substances. Contains two or more elements.
Characteristics of nonmetals
nonlustrous, poor conductors of electricity.
Chemical bonds
electrical forces of attraction that hold the particles of matter together.
diatomic molecules
two or more atoms that are held together to act as a single molecule.
allotropes
nonmetals that have multiple molecular forms.
cation
a positive ion
anion
a negative ion
polyatomic ions
several atoms connected to each other to form an ion.
binary compound
made up of only two elements
ternary compounds
made up of three or more elements