Classification and Properties of Matter (Sections)
In the process of attempting to characterize a substance, a chemist makes the following observations: The substance is a silvery white, lustrous metal. It melts at 649 °C and boils at 1105 °C. Its density at 20 °C is 1.738 g/cm3. The substance burns in air, producing an intense white light. It reacts with chlorine to give a brittle white solid. The substance can be pounded into thin sheets or drawn into wires. It is a good conductor of electricity. Which of these characteristics are physical properties, and which are chemical properties?
Chapter 14 –Ethers-‐Nomenclature Remember!! Polar and aprotic! R and R’ are alkyl or aryl O Example: diethyl ether CH CH 3‐O-‐2H CH 2 3 R R’ 3 • Oxygen is sp hybridized • Tetrahedral angle is 110 ο • C-‐O bonds are polar Physical Properties: • They have a lower