Science 2nd Quarter (2)

• IONIC BONDING do not involve in sharing of electrons
• Atoms react to with one another to form chemical bonds to attain stability
• HEISENBERG UNCERTAINTY PRINCIPLE - we cannot know the position of electrons
• MOLECULE - is produced after covalent bonding
• Carbon atoms form many organic compounds by forming many bonds with other carbon atoms
• Eugen Goldstein discovered the idea about the positively charged particle called "proton"
• What makes up an element?

  A substance compsoed of a single kind of atom
• Atom is the smallest particle of an element
• He is a Greek philosopher who began to search for a description of matter and named the smallest piece of matter called "ATOMOS" meaning "not to be cut"

  Democritus
• Joseph John Thomson Introduced the idea about the negatively charged particles called "electrons"
• Joseph John Thomson proposed a model of the atom that is sometimes called PLUM PUDDING MODEL
• Ernest Rutherford reasoned that all atoms that are positively charged particles were contained in the nucleus
• The bohr model explains electrons move in definite orbits around the nucleus much like planet circles the sun (solar system)
• Sommerfeld assumed that orbits doesn't have to be spherical but can also be elliptical
• Schrodinger was considered the Father of Quantum Mechanics
• Atomic Radius is the size of an atom
• Chemical bonds are attractive force that holds two atoms together
• The Three types of bonding are Metallic, Ionic, and Covalent
• Carbon atoms can have a maximum of four bonds