MATTER

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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?


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