This document discusses different types of matter and their classifications. It defines matter as anything that occupies space and has mass. Pure substances like elements and compounds contain only one type of matter, while mixtures are physical combinations of two or more substances that keep their identities. Elements are the simplest substances that cannot be broken down further, while compounds are formed by chemical combinations of elements. Mixtures can be either heterogeneous, containing observable parts of differing substances, or homogeneous, having an evenly distributed composition throughout.

1. Classification of Matter
3rd Quarter
Grade 8 Science

2. MATTER
Anything that occupies space and has
mass
Everything we see and touch are
forms of matter

3. SURVEY: Matter or Non-matter?
1. Air
2. Water
3. Energy
4. Sound
5. Soil
6. Light
7. Radio
8. Sun
9. Moon
10.Clouds

5. RESEARCH WORK
1. State a reason why compound is not a mixture.
2. State a difference between a compound and an
element.
3. State a reason why colloid is a heterogeneous
mixture even it appears the same throughout.
4. State the difference between mixture and pure
substance.
5. State the difference between a heterogeneous and
a homogeneous mixture.

6. SUBSTANCES
 Elements and compounds are known as
pure substances
 Pure = the same throughout
 Substance = A single, pure form of
matter, not a combination of different
kinds of matter

7. SUBSTANCES
Only one kind of matter
but may differ in number
of molecules

8. SUBSTANCES
Sodium chloride
Copper wire
Water
Neon
Neon
Carbon
dioxide
Iron fillings

9. Elements
Simplest form of matter
that cannot be break down
into simpler form

10. Elements
 Building blocks of matter
 All forms of matter are built on the
elements listed in the periodic table
 Classified into metals, non-metals, and
metalloids

11. Metals
 Hard
 Ductile
 Malleable
 Good conductors of heat and electricity

12. Non Metals
Brittle
Insulators
Low Density

13. Metalloids
 Behave like metals and non-metals
 Have the same physical appearance as
metals
 Behave chemically like nonmetals

14. Elements
The symbol of elements were taken
from names of their discoverers,
places of their discoveries, names of
planets, and Greek, Latin, and
French words.

15. Compounds
Elements in combination
Consist of atoms of two or more
elements chemically combined
together in definite proportions

16. Compounds
Water
Carbon Dioxide
Sodium Chloride

17. Chemical Formula
Shows the elemental parts or
components of a compound
The number written on the lower
right side of the symbol of element
is called the SUBSCRIPT.

18. Chemical Formula
The SUBSCRIPT tells the number
of atoms of each elements in the
compound.

19. Chemical Name and Chemical Formulas of
Common Compounds
CHEMICAL FORMULA CHEMICAL NAME
𝑯𝟐𝑶 Water
𝑪𝑶𝟐 Carbon Dioxide
𝑪𝑯𝟒 Methane
𝑪𝒂𝑪𝑶𝟑 Calcium Carbonate

20. Practice Exercise 1
Identify the elemental components and elemental
ratios of these compounds.
1. Sucrose, 𝐶12𝐻22𝑂11
2. Limestone, 𝐶𝑎𝐶𝑂3
3. Acetic acid, 𝐶𝐻3𝐶𝑂𝑂𝐻
4. Sodium hypochlorite, 𝑁𝑎𝐶𝑙𝑂
5. Potassium nitrate, 𝐾𝑁𝑂3

21. Practice Exercise 2
Classify each of the following as an
element or a compound.
1.Platinum
2.Potassium bromate
3.24-K gold
4.Fluorine

22. MIXTURE
A physical combination of two
or more different substances
that retain their distinct identity
but vary in composition.

23. Heterogeneous Mixture
 Made up of more than one
phase in which its
composition is not uniform
throughout

24. Colloid
 A substance that is
microscopically dispersed
evenly throughout another
substance

25. Colloid
 Smoke
 Cloud
 Fog
 Mist
 Gel
 Lotion
 Milk

26. Suspension
 Contains larger particles than are found
in a colloid
 One of the mixture component is
suspended in the solvent
 Example: Sand in water

27. Homogeneous Mixture
 Made up of only one phase in which
its composition is the same
throughout.
 Solution
 Example: Sugar Solution and Alloys

28. Practice Exercise 3
Classify each of the following as a heterogeneous
mixture or homogenous mixture. If it’s heterogenous,
specify if it is colloid or suspension.
1. Rubbing Alcohol
2. Sand in water
3. Mineral Water
4. Blood
5. Air

29. Practice Exercise 4
Classify each of the following as a pure
substance or mixture.
1. Diamond 6. Distilled Water
2. Hydrochloric Acid
3. Table Salt
4. Iron Fillings
5. Salt in Water