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• Are scrambled eggs a pure substance or a mixture?
  
• Why does fluid with high viscosity have strong attractive forces and greater internal friction?
  
• If the density of and object is 4.0 g/cm3 and the mass is 4.0kg then how mach volume does the object occupy? Could you also show how you got there?
  
• Why are hydraulic systems better for large machines?
  
• What is the relationship between air pressure and flight?
  
• What type of exhaust comes from a Steam Engine, Internal Combustion Engine, and a Hydrogen Fuel Cell?
  
• Could you list a few ways that would decrease the rate of a chemical reaction?