This chapter will describe some of the fundamental chemical principles related to the composition of matter, including those central to the concept of molecular
THE CHEMICAL LEVEL Atoms are the smallest stable units of matter They can combine to form molecules with complex shapes The atomic components and unique
Understand the basic structure of the atom • Understand the structure of the periodic table • Learn how to write formulas and name ionic and binary
Clusters of atoms held together by covalent bonds are called molecules Compounds that exist as molecules are often called molecular compounds Notice that the
Atoms ? The study of chemistry begins with the basic unit of matter, the atom Molecules = coefficient (the number in front) of molecular formula (ex
Different chemical elements have different kinds of atoms and in particular entities (atoms, molecules, formula unit or other fundamental particles)
Chemistry is often called the central science, because a basic knowledge of chemistry is essential for the study of biology, physics, geology, ecology, and many
language of chemistry Starting with atoms it progresses to elements, molecules and compounds It shows how a substance can be simply represented by a
The protons and neutrons clump together at the center of an atom and the electrons orbit far away Atoms can be combined to form molecules through chemical
O N Page 5 Atoms, Molecules, and Ions Dalton's Postulates Atoms of an element are not changed into atoms of a different element by chemical reactions;
elements are essential to life ➢ The 5 elements carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur are found in all living things
atoms and molecules and related aspects like atomic and molecular masses, mole Different chemical elements have different kinds of atoms and in particular such name 'atom' as mentioned earlier, emerged out of this basic philosophy