META TUTS | MOD 1

• Chemistry - Study of Matter
• What is the SPC of Matter?

  Structure, Properties, and Composition
• Matter that can be separated?

  Mixture
• Matter that cannot be separated?

  Pure Substance
• Mixture that is uniform in composition?

  Homogenous
• Micture that is not uniform in composition?

  Heterogenous
• 2 kinds of heterogoneous mixture?

  Colloids and Suspensions
• Mixture - contains two or more components, do not chemically combine
• Method wherein substances are separated based on the difference in specific gravity or density?

  Decantation
• Separation of solids from liquids by using a medium that only liquid can pass?

  Filtration
• Distillation - Separated by a series of evaporation and condensation. For separating volatile oils.
• Magnetic Separation - Magnetically susceptible material is extracted from a mixture
• Centrifugation - Accelerate settling of particles by using force which is centrifugal force.
• Method that is separating components of mixtures makes use of differences in solvent affinity?

  Chromatography
• Basic unit of matter?

  Atom
• Smallest particle of matter which enters a chemical combination?

  Atom
• What are the four quantum number?

  Principal, Azimuthal, Magnetic, Spin
• Other name of Azimuthal Quantum number?

  Angular
• Principal - Main energy level and the size of the atom
• Azimuthal - Shape of the orbital . Electron Cloud.
• Ernest Rutherford - discovered Proton
• James Chadwick - discovered neutron
• JJ Thomson - discovered electron
• Atomic mass or mass number = Proton + Neutron
• Magnetic - Orientation of the orbitals in space
• Spin - Rotation/Spin of the electrons
• Hund‘s Rule of Maximum Multiplicity - Electrons fill up orbitals singly first before pairing up
• Aufbau Building Up Principle - Lower energy are filled up first before higher energy levels
• Heisenberg’s Uncertainty Principle - The exact position and momentum of an electron cannot be determined simultaneously
• Alkali formers?

  Li, Na, K
• Salt Formers?

  Cl, Br, I
• Alkali former - Li - 7
• Alkali former - Na - 23
• Alkali former - K - 39
• Salt former - Cl - 35.5
• Salt former - Br - 80
• Salt former - I - 127
• Pauli exclusion principle is where an atom cannot have 2 electrons in the same energy level or orbital that have the same set of quantum numbers
• Who discovered the First TRUE PTE (33 Elements)?

  Antoine Lavosier
• Who arranged the elements by 3’s?

  Johann Wolfgang Dobereiner