1. Density B Thursday 11/5/15 C, D, E Friday 11/6/15

2. Materials Binder Pen/cil Calculator Thursday 11/5/2015 Warm-Up 3-2-1 Bridge “Before” - get the handout from Mrs. Lott!!!

3. Think-Pair-Share 1) How would you calculate the volume of a regularly shaped object? Explain. 2) How would you calculate the volume of an irregularly shaped object? Explain. 3) How would you use an electronic balance to get the mass of an object? Explain.

4. Learning Targets I Can... calculate the volume of regularly shaped objects calculate the volume of irregularly shaped objects use an electronic balance to get the mass of an object calculate the density of a substance analyze and solve problems involving density Thursday 11/5/2015

5. Density Unit 3: Characteristic Properties Thursday 11/5/2015

6. Recall that... Mass is the amount of matter in an object (in grams) Volume is the amount of space an object takes up (in mL or cm 3 ) A measure of how tightly packed and how heavy the molecules are in an object Density is...

7. Density Defined as mass per unit volume A measure of how tightly packed and how heavy the molecules are in an object Density = Mass Volume D = m V D m V

8. Example 1 A block of aluminum occupies a volume of 15.0 mL and has a mass of 40.5 g. What is the density of the block of aluminum? 2.7 g/mL Rounded to SigFigs: 2.70 g/mL D m V

9. Example 2 What is the mass of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL. 157.8 g Rounded with SigFigs: 158 g D m V

10. Example 3 What volume of silver metal will weigh exactly 2.50 kg. The density of silver is 10.5 g/cm 3. 238.095 cm 3 Rounded with SigFigs: 238 cm 3 D m V

11. Example 4 A block of lead has dimensions of 4.50 cm by 5.2 cm by 2.36 cm. The block has a mass of 1587 g. Calculate the density of lead. 28.8545 g/cm 3 Rounded with SigFigs: 29 g/cm 3 D m V

12. Example 5 An irregularly shaped metal has a mass of 5.68 g. When placed in a graduated cylinder, the water level rises from 25.0 mL to 27.2 mL, what is the density of the metal? 2.581818 g/mL Rounded with SigFigs: 2.58 g/mL D m V

13. Learning Targets Can you... calculate the volume of regularly shaped objects calculate the volume of irregularly shaped objects use an electronic balance to get the mass of an object calculate the density of a substance analyze and solve problems involving density Thursday 11/5/2015