Liquid Nitrogen Tank

Liquid Nitrogen Tank: 

Liquid Nitrogen Tank

Liquid Nitrogen Tank: 

Liquid Nitrogen Tank Liquid nitrogen storage tank at Illinois State University.

Liquid Nitrogen (N2): 

Liquid Nitrogen (N2) Physical properties: colorless liquid boiling point = -196 oC Uses: ‘flash’ freezing food (peas, fish) cosmetic surgery (removal of moles) size metal pieces cryogenic freezer for genetic samples (sperm, eggs) WARNING: Liquid nitrogen can cause severe burns. Mr. Bergmann demonstrates properties of liquid nitrogen.

Pressure Gauge for N2: 

Pressure Gauge for N2 Note frozen water vapor on pipe (bottom left) of photo.

Liquid Nitrogen: 

Liquid Nitrogen

Hydrogen Bonding: 

Hydrogen Bonding Intermolecular forces of attraction between molecules Bonds exist within molecules

Polar Water Molecule: 

Polar Water Molecule

Hydrogen Bonding among water Molecules: 

Hydrogen Bonding among water Molecules

Boiling Points of Covalent Hydrides: 

Boiling Points of Covalent Hydrides

Interaction of Dipoles: 

Interaction of Dipoles (a) Interaction of two polar molecules. (b) interaction of many dipoles in a liquid

Ethanol is Polar: 

Ethanol is Polar

Ethanol and Water are Soluble: 

Ethanol and Water are Soluble

Resources - Gas Laws: 

Resources - Gas Laws Objectives Worksheet - vocabulary Video (VHS) - crisis in the atmosphere Worksheet - behavior of gases Worksheet - unit conversions for the gas laws Worksheet - Graham's law Worksheet - gas laws with one term constant Worksheet - the combined gas law Worksheet - Dalton's law of partial pressure Outline (general) Worksheet - density of gases (table) Worksheet - practice problems for gas laws Worksheet - gas laws review / mole Worksheet - review problems for gas laws Demonstrations - gas demos Worksheet - manometers Worksheet - vapor pressure and boiling Lab - reaction of Mg with HCl Worksheet - ideal gas law

Resources - Gas Laws: 

Resources - Gas Laws Objectives Worksheet - vocabulary Video (VHS) - crisis in the atmosphere Worksheet - behavior of gases Worksheet - unit conversions for the gas laws Worksheet - Graham's law Worksheet - gas laws with one term constant Worksheet - the combined gas law Worksheet - Dalton's law of partial pressure Outline (general) Worksheet - density of gases (table) Worksheet - practice problems for gas laws Worksheet - gas laws review / mole Worksheet - review problems for gas laws Demonstrations - gas demos Worksheet - manometers Worksheet - vapor pressure and boiling Lab - reaction of Mg with HCl Worksheet - ideal gas law