1. 8 th Grade Science DO-NOW Complete RM 8 Volume 0 Record the mass of the object on the grid.

2. 8 th Grade Science Mass of an Object What is the mass of the object? Use the grid below for your answer.

3. 8 th Grade Science Mass of an Object

4. 8 th Grade Science Today’s Schedule 1.Do-Now 2.Lab: Identify the Identity of an Unknown Substance 3.Writing our Letter Dark Matter Objectives: Today we will… -Use water displacement to find the volume of an object. -Calculate density to identify an unknown substance. Essential Questions: -It what ways can we describe the properties of substance? -How do we calculate density?

5. 8 th Grade Science 1. 2.2. 3. 4. 5. 6. 7. Mrs. Fillpot was given a metal sample by a jeweler. The jeweler said that the price of gold was $40.42 per gram. He told her it would give her a deal and only charge her $100 for the gold sample in the box. Should Mrs. Fillpot give the jeweler $100 for the sample?

6. 8 th Grade Science Identify the Unknown Metal 1. 2.2. 4. 5. 6. 7. Identify the Unknown Metal Problem: Our problem is that… Materials: Density of Metals SubstanceDensity (g/cm 3 ) Aluminum2.64 Brass8.55 Copper8.68 Gold19.29 Iron7.77 Lead11.34

7. 8 th Grade Science Identify the Unknown Metal 1. 2.2. 4. 5. 6. 7. Procedure: 1.Find the mass of the sample with the triple-beam balance. 2.Find the volume of the sample, using water displacement. Formulas: Volume= Final volume- initial volume Density = mass (g) volume (mL) Data: Mass of Sample =___________ Volume of Sample=_____________ Density of Metals SubstanceDensity (g/cm 3 ) Aluminum2.64 Brass8.55 Copper8.68 Gold19.29 Iron7.77 Lead11.34

8. 8 th Grade Science 1. Dear Mrs. Fillpot, Today in science we… The metal sample we tested had a mass of… The metal sample we tested had a volume of… We calculated density by… In conclusion, the identity of the sample is… Based on our measurements, our team recommends that… Sincerely,

9. 8 th Grade Science How did we… 1.Do-Now 2.Lab:Identify the Identity of an Unknown Substance 3.Writing our Letter Dark Matter Objectives: Today we will… -Use water displacement to find the volume of an object. -Calculate density to identify an unknown substance. Essential Questions: -It what ways can we describe the properties of substance? -How do we calculate density?