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2. Do you like eating halo-halo? Whenever you
eat halo-halo, can you distinguish the nata de coco
from the garbanzos? How about the red beans from
the langka? How and why can you distinguish them
from one another?
The ingredients in a halo-halo do not change
their taste and color even after being mixed together.
This happens because they retain their properties. In
the previous lesson, you have learned that mixture is a
combination of two or more substances. When the
combined substances are not evenly spread
throughout, as in halo-halo, the mixture is said to be
heterogeneous.

3. Let’s Learn
A heterogeneous mixture is a mixture that has a non-
uniform composition. In this type of mixture, the physical
properties of each substance are distinct from one another.
This mean that you can identify the separate components if
you examine a sample of a heterogeneous mixture. This is
possible because each component or substance in this
mixture retains its individual properties.

4. Characteristics of Heterogeneous Mixture
1. The substances of heterogeneous mixtures are not in any sort of fixed ratio.
If you have a large bucket of water and
add pebbles into the water, the mixture will
simply be a mixture of both water and pebbles.
At no point, no matter how much water and
pebbles you add to the mixture, does the
mixture itself change.

5. 2. The components or substances in heterogeneous mixtures maintain their
own individual properties.
The properties of the substances
never change. Using the same example
above, the water and pebbles, even when
mixed together, the water still remains water
and the pebbles still pebbles. Also, if you are
to make a bowl of vegetable soup and add
various ingredients in it, then the different
ingredients will remain the same despite
being mixed together into the soup.

6. 3. The substances of heterogeneous mixtures can be separated through
physical means.
Separating mixtures physically simply
means to move the substances of the mixture
apart from one another without changing them on
the chemical level. In the case of the water and
pebbles, you can easily just filter the water out
and leave the bucket full of pebbles in order to
separate them from one another. As for the water
absorbed by the pebbles, you can let it evaporate
so that you can eventually get pure pebbles
again. This can also be done in the case of the
vegetable soup. You can separate its components
even after they have all been mixed together.

8. Different Kinds of Heterogeneous Mixtures
• Heterogeneous mixtures are classified based on the phase of matter that
they are in. There are three phases of matter ---solid, liquid, and gas.
1. Suspensions – Is a mixture that consists of a liquid
and particles of a solid. In this kind of mixture, the
particles do not get dissolved. Instead, they are
dispersed throughout the liquid after the particles and
the liquid get mixed up together. Hence, they can be
described as “suspended” in the liquid. Settling of solid
particles and separating over time if left alone is
another key characteristic of a suspension.

9. 2. Colloids - Is a mixture that consist of an even distribution
of very small particles of one substance throughout another
substance. Colloids have very similar appearance with
solutions. However, instead of being fully dissolved, the
particles of a colloid are suspended. As compared to
suspensions, the particles in colloids will not settle at the
bottom over a period of time. These particles will stay
suspended or float. Colloids are classified heterogeneous
mixtures. However, they also have some qualities of a
homogeneous mixture.
Some examples of colloids are glue, gelatin dessert,
paint, smoke, milk, aerosol spray, blood, and marshmallow.

10. 3. Emulsions – Is a mixture that consists of a colloidal suspension of one liquid
in another liquid which can normally unmixable or unblendable. This means that
emulsions have the ability to separate into their individual components if allowed
to sit long enough.
Face creams, mayonnaise, soapy water, and salad dressings made by
shaken oil and vinegar are some examples of emulsions.

11. Uses of Heterogeneous Mixtures
1. Soil. It is a combination of many different elements which are not
uniform.
2. Food that you eat. Examples: pizza, salad, soup and many more
3. Soda. It has water, sugar and carbon dioxide which forms bubbles.
4. Emulsions. It use for cosmetics products, pharmaceutical industry for
making medicines.
Emulsions can be use also in hair care products, in color
photography, pesticides and fungicides production, paints and inks.