Mixtures and their Characteristics

1. Mixtures and their
Characteristics
By teacher Louis

2. Objectives:
● Recognize the difference between heterogeneous mixtures and
homogeneous mixtures
● Demonstrate the characteristics of mixtures
● Integrate the properties of mixture

3. What is Mixture?
In chemistry, when two or more substances mix with each other without
participating in a chemical change, the resulting substance is called a
Mixture.

4. The result formed due to the combination of substances does not lose its
individuality nor are they combined chemically. Mixtures are the one
product of a mechanical blending or mixing of chemical substances such
as elements and compounds.

5. General Properties of Mixtures
Mixtures are made up of two or more substances that are not chemically
combined with each other. The properties of mixtures are listed below.
● The components of a mixture each keep their original properties.
● The separation of components can be easily done.
● The proportion of the components is variable.

6. Mixtures of solids
They can have pure elements or a variety of compounds inside. When
you have a solid with more than one type of compound, it is called a
mixture. Most rocks are mixtures of many different compounds. Concrete
is a good example of a man-made solid mixture.

7. Mixtures of Liquids
This is a type of liquid-liquid mixture whereby the two substances mix
completely to from a single substance. Examples are: Alcoholic drinks
(alcohol mixed with flavorings). Juice (water mixed with flavorings).

8. Mixtures of Gases
One of the properties of gases is that they mix with each other. When they do so,
they become a solution—a homogeneous mixture. Some of the properties of gas
mixtures are easy to determine if we know the composition of the gases in the
mix. In gas mixtures, each component in the gas phase can be treated separately.

9. Types of Mixtures
There are two types of mixtures: heterogeneous and homogeneous.
Heterogeneous mixtures have visually distinguishable components, while
homogeneous mixtures appear uniform throughout. The most common
type of homogenous mixture is a solution, which can be a solid, liquid, or
gas.

10. Types of Mixtures
● heterogeneous mixtures
A heterogeneous mixture is simply any mixture that is not uniform in
composition - it's a non-uniform mixture of smaller constituent parts. By
contrast, a mixture that is uniform in composition is a homogeneous mixture.
● homogeneous mixtures
A homogeneous mixture is a mixture in which the composition is uniform
throughout the mixture. ... All solutions would be considered homogeneous
because the dissolved material is present in the same amount throughout the
solution. One characteristic of mixtures is that they can be separated into their
components.

11. Solutions
● Solute
● Solvent
A solution forms when one substance is dissolved by another. The
substance that dissolves is called the solute. The substance that dissolves
it is called the solvent. The solute is present in a lesser amount that the
solvent.

12. Dilute vs. Concentrated
The concentration of a solution is a measure of the amount of solute that
has been dissolved in a given amount of solvent or solution. A
concentrated solution is one that has a relatively large amount of
dissolved solute. A dilute solution is one that has a relatively small amount
of dissolved solute

13. Saturated Solutions
A saturated solution is a solution that contains the maximum amount of
solute that is capable of being dissolved. At 20°C, the maximum amount
of NaCl that will dissolve in 100. g of water is 36.0 g. If any more NaCl is
added past that point, it will not dissolve because the solution is saturated.