Key terms and concepts to study for final exam:
· What makes sunsets red? Light scatters in particles
· Allotropes
· Covalent bonds (vs. ionic bonds)
· Carbon has four covalent bonds: draw them for CH4 or C2H6
· Which are the lowest energy electromagnetic rays? Infrared (heat)
· Photosynthesis is the opposite of respiration. What are the products of each?
· What is the atmosphere made of?
· What is 1 atmosphere of pressure at sea level?
· Define isomers.
· Explain separating compounds through Distillation by different boiling points
· What is in rainwater that makes it acidic? CO2
· Define CFC’s and what they do to promote global warming.
· How does carbon dioxide affect global warming?
· Hydrocarbon boiling points increase as the number of carbon atoms increase. Why?
· What produces CO2 and what uses it?
· What is carbon monoxide (CO) and how is it produced?
· Define a catalyst. Is it used up in a reaction?
· Define fractional distillation and what it’s used for.
· How much garbage does the average person create per day? 4-7 pounds
· What byproducts come from manufacturing processes?
· Kinetic vs. potential vs. chemical energy
· Why doesn’t an upside down jar lower into water easily? (air)
· What does it mean to “use up” chemicals?
· Altitude is related to pressure. High altitude = less pressure
· Molarity is solution concentration
· Kjoules measure energy
· When we extract a metal from an ore, are we oxidizing or reducing it?
