Measurement

• The International System of Units, or SI SYSTEM, is the preferred method of measurement in chemistry
• SI prefixes

  A) Giga

  B) Mega

  C) Kilo

  D) Deci

  E) Centi

  F) Milli

  G) Micro

  H) Nano

  
• Dimensional analysis - a mathematical method used to convert actual measured units into the units needed for the answer to a problem
• Conversion factor - the relationship between the two units
• A conversion factor is also known as a RATIO
• Length to meter - distance between two points
• Volume to liter - amount of space that something occupies
• Mass to gram - amount of matter in a solid, liquid, or gas
• Weight to newton - force exerted by a mass by a gravitational field
• when you measure someone's weight, you measure the force that they exert on Earth
• Time to seconds - period between events
• Density to grams - amount of mass per unit volume
• Temperature to kelvin - measure of the average kinetic energy of the atoms or molecules in a system
• Heat to calorie - total energy of the molecular motion in a substance
• Celsius to Kelvin formula

  
• Kelvin to Celsius formula

  
• Celsius to Fahrenheit formula

  
• Fahrenheit to Celsius formula

  
• Pressure - measure of the force exerted on a unit area of surface