Do Now Complete the first 12 questions on the handout called “Writing Meters, Liters, and Grams” Remember “King Henry’s Dog Beethoven Drinks Chocolate Milk”

How to Construct a Line Graph 1. Independent Variable on the X axis, label with units. 2. Dependent variable on the y axis, label with units. 3. Determine the scale of the graph – (by 2, 5, 10 or more) Spread out the graph to use MOST of the paper. Count how many boxes you have and then compare to your range to determine what number to scale by. 4. Plot and connect the data points. 5. Title the graph.

Density Amount of matter within a given space of an object How tightly, or loosely, packed the molecules are More Dense = Tightly Packed Less Dense = Loosely Packed MORE DENSE LESS DENSE 5

To calculate Density: Equation: Mass (g): Volume (cm3): Triple Beam Balance Volume (cm3): Measure (L x W x H) Water Displacement (Graduated Cylinder)

Density’s Label Density of Liquids or Gases: - g/mL Density of Solids: - g/cm3

Example 1 What is the Density of the following Solid Object? MASS cm MASS 160.0 g W = 2.0 cm L = 4.0 cm

The lower an object floats, the more dense it is! Relative Density Floatation Objects that are less dense will float on more dense objects. The lower an object floats, the more dense it is! Least Dense Most Dense 12

Size of an object does not affect its Density Size and Density Size Density RELATIONSHIP: Size of an object does not affect its Density Constant 13

Temperature and Density Heat Added Object Expands Temp Density Indirect RELATIONSHIP: As temperature INCREASES, density DECREASES 15

As pressure INCREASES, density INCREASES Pressure and Density Pressure Added Object Compresses Press Density Direct RELATIONSHIP: As pressure INCREASES, density INCREASES 16