chemistry, water and ph. atom structure matter mass space made up of atoms protons neutrons...
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Chemistry, Water and pH
Atom Structure
MatterMass
Space
Made up of atoms
Protons
Neutrons
Electrons
Definitions
Element – a substance that cannot be reduced to a simpler substance
Molecule – two are more atoms together
Compound – two are more elements together
Periodic Table
Atom Structure
Atomic number
Mass number
Atomic weight
Isotopes
Same element with different numbers of Neutrons
Isotopes
Radiometric Dating
Tracers
ChernobylApril 26 1986 extensive parts of the western Soviet Union, Eastern Europe, Western Europe, Northern Europe, and eastern North America Nearly thirty to forty times more fallout was released than had been by the atomic bombings of Hiroshima and NagasakiDirect Deaths: 56
Three Mile IslandMarch 28 1979 partial core meltdown in Unit 2 of the nuclear power plant release of a significant amount of radioactivity, an estimated 43,000 curies of radioactive krypton (1.59 PBq), but under 20 curies (740 GBq) of the particularly hazardous iodine-131, to the environment.no deaths or injuries
Hershey
Fukushima Daiichi
March 11 2011No immediate deaths
due to radiationA few of the plant's
workers were severely injured or killed by the disaster conditions
at least six workers have exceeded lifetime legal limits for radiation and more than 300 have received significant radiation doses. Predicted future cancer deaths due to accumulated radiation exposures in the population living near Fukushima have ranged from none to 100.
Microwaves
Energy Levels
Electron Shells
“Happy Atoms”
Bonding
Covalent BondingNonpolar
Polar
Ionic Bonding
Hydrogen Bonding
Van der Waals Interactions
Hydrophobic Interactions
Nonpolar Covalent Bonds
Polar Covalent Bonds
What is an Ion?
CationA positive charged ion
AnionA negatively charged ion
Ionic Bonds
Hydrogen Bonds
Van der Waals
The weak bonds that exist between molecules but are masked by other stronger bonds. They are evident only in symmetrical molecules or at very low temperatures.
Hydrophobic Interactions
Hydrophobic
Hydrophilic
Water
Water Structure
Polar Covalent Bonds
Hydrogen Bonds
Water Properties
Adhesion
Cohesion
Surface Tension
Water Properties
Surface Tension – Basilisk (Jesus) Lizard
Water Properties
High Specific Heat
Water Properties High Specific Heat
Water Properties
High Heat of Vaporization
Water Properties
Expands when freezing
Water Properties
Universal Solvent
Solutions
Solute + Solvent = Solution
pH Scale
Acid – donates H+
Base – accepts H+
Richter Scale
Acid Precipitation
Acid Precipitation
Acid Precipitation
Buffers