3-6a

**Study Guide**

<---Previous Assignment - Next Unit--->media type="custom" key="6581745" **__Time Length__** **__On the test you should know:__ **
 * 1 Day
 * How to calculate density of regular and irregular objects
 * Manipulate the density equation to solve for mass, or volume.
 * Know the Steps of the [|Scientific Method.]
 * Be able to identify Independent Variable, and Dependent Variable.

**__Videos & Notes__**
 * [|Understanding the Units of Density]
 * [|How to Manipulate Equations (Important!)]
 * [|How to Solve Density Problems]
 * **Density of Irregularly Shaped Objects**
 * Calculate the mass in grams with the triple beam balance
 * Calculate to the nearest hundredth (estimate between the lines)
 * Example 234.43 g
 * Calculate the volume in mL by displacement in a graduated cylinder (dropping things in water)
 * Put an amount of water in a graduated cylinder that will submerge the object completely
 * Note the original volume
 * Drop the object in
 * Note the new volume (take the reading from the bottom of the [|meniscus] )
 * Calculate to the nearest tenth (estimate between the lines)
 * Example 43.3 mL
 * D=m/v
 * (unit is g/mL)
 * Round to 2 decimals)
 * Round to 2 decimals)


 * **Density of Regularly Shaped Objects**
 * Calculate the mass the same as before
 * Calculate the volume using the equation LxWxH
 * Measure in cm
 * Calculate to the nearest tenth (estimate between the lines)
 * Example 9.4 cm
 * Calculate the density the same as before