1. Unit: Chemistry Lesson 3: Measuring Matter Essential Questions: 1.) Describe the units used to measure mass and volume 2.) Explain how to determine the density of a material

2. Think About It… Which weighs more, a pound of feathers or a pound of sand?

3. Think About It… Both weight the same- one pound!

4.  A scale measures weight  Weight is the measure of the force of gravity on an object

5.  A balance measures mass  The SI unit is kilograms  Mass is the amount of matter in an object

6.  Volume is the amount of space an object takes up  The SI unit is the cubic meter  Calculating Volume for rectangular solids: Length x Width x Height *Find the volume of the cube

7.  Calculating Volume for Irregular Solids: 1.) Fill the cylinder with a liquid. What is the volume? 2.) Slide the object in. What is the new volume? 3.) Find the difference: Volume with the object- Volume without the object *Find the volume of the marble

8. https://www.khanacademy.org/math/basic-geo/basic-geo-volume- surface-area/basic-geo-volumes/v/volume-of-a-sphere  Calculating Volume for Spheres:

9. Think About It… Which takes up more space, a pound of feathers or a pound of sand?

10. Think About It… A kilogram of sand takes up less space than a kilogram of feathers! They have different volumes and densities!

11. Density Column Vegetable Oil Water Dish soap Corn syrup Honey

12. Density is the amount of mass in a given volume The SI unit is g/cm 3  Objects with the same mass but different volumes will have different densities.  Objects with different masses but the same volumes with have different densities.