Is Matter Around Us Pure
Pure, means that all the constituent particles of that substance are the
same in their chemical nature. A pure substance consists of a single type
of particle. A substance is a pure single form of matter.
Mixture
● Mixtures are constituted by more than one kind of pure form of
matter.
● Whatever the source of a pure substance may be, it will always have
the same characteristic properties.
● A mixture contains more than one pure substance.
Types Of Mixtures
● A mixture that has a uniform composition throughout. Such mixtures
are called homogeneous mixtures or solutions.
○ A homogeneous mixture can have a variable composition.
● A mixture that contains physically distinct parts and has
non-uniform compositions. Such mixtures are called heterogeneous
mixtures.
Solution
● A solution is a homogeneous mixture of two or more substances.
● In a solution, there is homogeneity at the particle level.
● Alloys are mixtures of two or more metals or a metal and a non-metal
and cannot be separated into their components by physical
methods.
○ An alloy is considered a mixture because it shows the
properties of its constituents and can have a variable
composition.
● A solution has a solvent and a solute as its components.
○ The component of the solution that dissolves the other
component in it (usually the component present in a larger
amount) is called the solvent.
○ The component of the solution that is dissolved in the solvent
(usually present in lesser quantities) is called the solute.
Examples:
● A solution of sugar in water is solid in a liquid solution. In this
solution, sugar is the solute and water is the solvent.
● A solution of iodine in alcohol known as ‘tincture of iodine, has iodine
(solid) as the solute and alcohol (liquid) as the solvent.
● Aerated drinks like soda water etc., are gas in liquid solutions. These
contain carbon dioxide (gas) as solute and water (liquid) as solvent.
Pure, means that all the constituent particles of that substance are the
same in their chemical nature. A pure substance consists of a single type
of particle. A substance is a pure single form of matter.
Mixture
● Mixtures are constituted by more than one kind of pure form of
matter.
● Whatever the source of a pure substance may be, it will always have
the same characteristic properties.
● A mixture contains more than one pure substance.
Types Of Mixtures
● A mixture that has a uniform composition throughout. Such mixtures
are called homogeneous mixtures or solutions.
○ A homogeneous mixture can have a variable composition.
● A mixture that contains physically distinct parts and has
non-uniform compositions. Such mixtures are called heterogeneous
mixtures.
Solution
● A solution is a homogeneous mixture of two or more substances.
● In a solution, there is homogeneity at the particle level.
● Alloys are mixtures of two or more metals or a metal and a non-metal
and cannot be separated into their components by physical
methods.
○ An alloy is considered a mixture because it shows the
properties of its constituents and can have a variable
composition.
● A solution has a solvent and a solute as its components.
○ The component of the solution that dissolves the other
component in it (usually the component present in a larger
amount) is called the solvent.
○ The component of the solution that is dissolved in the solvent
(usually present in lesser quantities) is called the solute.
Examples:
● A solution of sugar in water is solid in a liquid solution. In this
solution, sugar is the solute and water is the solvent.
● A solution of iodine in alcohol known as ‘tincture of iodine, has iodine
(solid) as the solute and alcohol (liquid) as the solvent.
● Aerated drinks like soda water etc., are gas in liquid solutions. These
contain carbon dioxide (gas) as solute and water (liquid) as solvent.
