2nd to 4th Quarter Science

• Attractive force holding atoms together

  Chemical bond
• Atoms gains stability by having nobe gas/es configuration

  Octet Rule
• How many electrons would it mesd for a atom to become stable?

  8
• Formed by transfer of electrons

  Ionic Bond
• a bond formed when electrons gain stability

  Covalent Bond
• electronegativity is less than 1.9 and more than 0.4

  Polar covalent bond
• electronegativity equsl to 0.4

  Covalent bond
• formed by atrraction of cations and electrons

  Mettalic Bond
• can be drawn into wire

  Ductile
• when light strikes and gives the metal a shiny appearance

  Luster
• Can be hammered or flattened

  Malleability
• Free to move within the metal

  Good Conductor of Electricty
• Easily transfer heat

  Good thermal conductor
• Has high ionization and electronegativity

  Non Metals
• has low ionization energy and electronegativity

  Metals
• Boric Acid

  Green
• Calcium Chloride

  Orange
• Sodium chloride

  Yellow orange
• Potassium Chloride

  Light violet
• Copper sulfate

  Blue green
• determine idebtity of unknown metal or metalloid ion BASED ON COLOR EMISSION

  Flame test
• Father of Periodic Table of Elements

  Mendeleev
• A unit for counting number of particles

  Mole
• Element mass is equal to atomic mass and  Compound mass is equal to formula mass

  Molar Mass
• Element mass is equal to atomic mass and  Compound mass is equal to formula mass

  Molar Mass
• Who discovered 6.02 x 10²³

  Avogadros Number
• Unit of Avogadros constant

  g/mol
• Organic compounds

  -Carbon compounds
• Inorganic Compounds

  -Compounds not containing carbon
• Who discovered proton?

  Eugene Goldstein
• The smallest particle of an element

  -Atom
• Named the smallest particle of matter "Atomus

  Democritos
• Performed a experiment that lead to acceptance of atoms

  John Dalton
• Plum pudding model

  Thomson
• atoms are positively charged in the nucleues

  Rutherford
• Electrons move in different orbits in the nuclues is also a Danish scientist

  Neils Bohr
• Father of Quantum Mechanics

  Erdwin Schrodinger
• Famous for his planetary mode

  Neils Bohr
• Finger print of an atom

  Atomic Spectra
• Behave as a wave or particle

  De Brogie-e