1. Introduction to Chemistry
Ms. Sawh Form 4 Chemistry

2. What you will need Notebook: a new one/Form 3 notebook
Lab book: purchase in school
Syllabus (available online)
Past Papers (available in bookstores/school)
Access to Computer and my website:
An address
Folder pages/manila folders

3. Chemistry What do you think the study of Chemistry is about?
Why are you studying Chemistry?
Do you think Chemistry has any relevance to your everyday life?
How is Chemistry different to any other science e.g. Biology, Physics?

4. Matter
What is matter?
Anything that has a mass and a volume

5. What are the states of matter?
Solid
Liquid
Gas
Plasma
Close up view of atoms and their behavior
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6. Physical vs. Chemical Change
Changing from one state to another is a
Physical Change,
e.g. melting
Give another example.
If a new substance is formed it is a
Chemical Change, e.g.
Give another example.
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7. Kinetic Theory of Matter (Particulate Nature of Matter)
All Matter is made up of particles
Name these particles.
How do we know these particles exist?
What evidence do we have that proves matter is made up of particles?

8. Processes that prove particles exist in matter
The particles that exist in matter are:
atoms, molecules and ions.
The evidence that proves these particles exist are:
Diffusion
Osmosis
Brownian Motion
Write a definition of each and give examples.

9. Pure and Impure Matter
Matter can be pure and impure. How can we tell if a substance is pure? Can you name any pure substances? What are some impure substances?

10. Pure substances Atoms Elements Molecules Compounds
Can you write definitions for these pure substances and give examples?

11. Atoms Elements Smallest indivisible particles making up elements.
The building blocks of Matter
Consists of Protons (+), Electrons (-),
and Neutrons (0).
Elements
Consists of only one kind of atom,
Cannot be broken down into a simpler type of substance
by either physical or chemical means
Can exist as either atoms or molecules.
Give examples.
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12. Molecules
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together.
Give examples.

13. Compounds Atoms of two or more different elements bound together.
Can be separated into elements chemically, but not physically.
Give examples.
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14. Solutions Homogeneous
Impure Matter
Solutions are groups of molecules that are mixed up in a completely even distribution.
They can be homogeneous or heterogeneous.
Homogeneous
Uniform Distribution.
Example: Sugar and Water
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15. Solute Solvent To make a solution: The substance to be dissolved.
The one doing the dissolving.

16. Making a Solution

17. Colloids
Particle sizes are in between the size of particles found in solutions and suspensions .
Can be mixed and remain evenly distributed without settling out.

18. Mixtures Heterogeneous
They are substances (compounds,elements) held together by physical forces, not chemical.
Can be separated physically.
Solutions are also mixtures, but
can be heterogeneous.
Heterogeneous
The substances are not uniformly mixed.
Example: Sand in a glass of water.
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19. Mixtures Suspensions Are heterogeneous mixtures consisting of parts
that are visible to the naked eye.
Substances will settle over time.
Example: the ingredients in salad dressing

20. Matter Mixtures Homogeneous Heterogeneous Pure Substances Solvent
Solution
Solvent
Colloids
Heterogeneous
Suspensions
Pure Substances
Element
Molecule
Compounds

21. Questions How is a mixture different to a compound?
How is a compound different to a molecule?
How is an atom different to an element?
Is a solution a pure substance?