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Unit 4: Chemistry

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This unit is divided into four sub-units of study.
  1. Structure of Matter: Each of the more than 100 elements of matter has distinct properties and a distinct atomic structure. All forms of matter are composed of one or more of the elements.
    • the structure of the atom and know it is composed of protons, neutrons, and electrons.
    • compounds are formed by combining two or more different elements and that compounds have properties that are different from their constituent elements.
    • atoms and molecules form solids by building up repeating patterns, such as the crystal structure of NaCl or long-chain polymers.
    • the states of matter (solid, liquid, gas) depend on molecular motion.
    • in solids the atoms are closely locked in position and can only vibrate; in liquids the atoms and molecules are more loosely connected and can collide with and move past one another; and in gases the atoms and molecules are free to move independently, colliding frequently.
    • how to use the periodic table to identify elements in simple compounds.
  2. The Periodic Table of Elements: The organization of the periodic table is based on the properties of the elements and reflects the structure of atoms.
    • how to identify regions corresponding to metals, nonmetals, and inert gases.
    • each element has a specific number of protons in the nucleus (the atomic number) and each isotope of the element has a different but specific number of neutrons in the nucleus.
    • substances can be classified by their properties, including their melting temperature, density, hardness, and thermal and electrical conductivity.
  3. Chemical Reactions: Chemical reactions are processes in which atoms are rearranged into different combinations of molecules.
    • reactant atoms and molecules interact to form products with different chemical properties.
    • the idea of atoms explains the conservation of matter: In chemical reactions the number of atoms stays the same no matter how they are arranged, so their total mass stays the same.
    • chemical reactions usually liberate heat or absorb heat.
    • physical processes include freezing and boiling, in which a material changes form with no chemical reaction.
    • how to determine whether a solution is acidic, basic, or neutral.
  4. Organic Chemistry: Principles of chemistry underlie the functioning of biological systems.
    • carbon, because of its ability to combine in many ways with itself and other elements, has a central role in the chemistry of living organisms.
    • living organisms are made of molecules consisting largely of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
    • living organisms have many different kinds of molecules, including small ones, such as water and salt, and very large ones, such as carbo­hydrates, fats, proteins, and DNA.

What are the smallest things in the universe, and how do they behave?

Classwork Documents

Atom Discovery

The Elements Research

Chemistry Practice


Internet Links

Best online periodic table - totally interactive, wikipedia links, comprehensive, nice layout

Vision Learning
Great library of 'modules' or lessons for all topics of chemistry.  Includes animations, quizzes and links.  Also available in Spanish.

A nice introduction to all concepts of chemistry in a user-friendly format.

Basic Chemistry Concepts
A biologist's view of chemistry - the essential facts that every science student should know.
Written as an aid to high school and college students.  Starts with the fundamentals and gives expert help with difficult areas.
Nice explanation with examples and practice problems.
Includes properties and common examples of acids and bases.



Balancing Chemical Equations

Build an Atom

Build a Molecule

States of Matter

Isotopes and Atomic Mass




4.1 structure of the universe

4.2 Creation Story

4.3 Topics in Chemistry

Kamyar Pourhamidi,
Feb 1, 2016, 9:16 AM
Kamyar Pourhamidi,
Mar 10, 2015, 10:51 PM