MATTER
Products
A substance formed in a chemical reaction
Fermenting cheese
A chemical change
Ability to react with oxygen
A chemical property
Soil
A heterogeneous mixture
Mixture
A physical blend of two or more components
Definite volume
A physical property of a substance in the liquid state
Distillation
A process in which a liquid is boiled to produce a vapor that is condensed again into a liquid
Mass
Amount of matter an object contains
Pure water
Can be classified as a mixture
Liquid only
Characterized by having an indefinite shape but a definite volume
Compound
Composed of two or more substances chemically combined in a fixed proportion
Homogeneous
Describes mixture with a uniform composition
Stainless steel
Example of a homogeneous mixture
Water vapor
Example of a phase
Evaporation
Example of a physical change
Silver
Example of a substance
Mass
Example of extensive property of matter
Oil and vinegar
Example of heterogeneous mixture
Salt
Example of homogeneous mixture
Mayonnaise
Example of mixture
Vapor
Gaseous state of substance that is a liquid or solid at room temperature
A gas is in the gaseous state at room temperature and a vapor is in either the solid state or the liquid state at room temperature
How do vapors and gases differ?
3 phases
How many phases of water are in equilibrium at the triple point?
3 states
In how many physical states does water commonly exist?
Homogenous mixtures
Known as solutions
Heterogeneous mixture
More than one phase
Heterogeneous mixture
Not uniform in composition
Phase
Part of a sample having uniform composition and properties
Melting point
Physical property
Malleability
Physical property of a substance
Melts below room temperature
Physical property of water
Chemical reaction
Process in which substances are changed into different substances
H2O
Represents a compound
Distillation
Seperating a solid from a liquid by evaporating the liquid
Reactant
Starting substance in a chemical reaction
Solid only
State of matter characterized by having a definite shape and a definite volume
Gas
State of matter that expands when heated and is easy to compress
Liquid only
State of matter that has a definite volume and takes the shape of its container
Gas only
State of matter that takes both the shape and volume of its container
Solution
Substance that can be separated into two or more substances only by a chemical change
Element
Substance that cannot be changed into simpler substances by chemical means
Liquid
Substance that forms a vapor is generally in what physical state at room temperature
Sublimation
The change of a solid directly to a vapor
Fe
The chemical symbol for iron
Vaporization
The conversion of a liquid to a gas below the boiling point
Sublimation
The direct change of a substance from a solid to a gas
Capitalized
The first letter in a properly written chemical symbol
Melting point
The temperature at which a solid changes into a liquid
Normal boiling point
The temperature at which the vapor pressure of a liquid is equal to one atmosphere
Boiling point
The temperature at which the vapor pressure of a liquid is equal to the external pressure
Compounds
They are substances
Evaporation
Vaporization at the surface of a liquid that is not boiling
The composition of substances cannot vary while the composition of mixtures can
What distinguishes a substances from a mixture?
Matter is neither destroyed not created
What happens during a chemical reaction?
It does not change
What happens to the temperature of a liquid as it evaporates?
Fracture formation
What indicates that a physical change has taken place
A compound can only be separated into its components by chemical means
What is one difference between a mixture and a compound?
Letters
What is used for chemical symbols today?
Check the composition of the sample before and after the change
What must be done to be certain that a chemical change has taken place?
The total mass of the reactants equals the total mass of the products
Which is true for all chemical reactions?
