1. BEFORE WE DEFINE DENSITY WE NEED TO KNOW WHAT MASS AND VOLUME IS? Go ahead and write in your composition books what you think mass and volume is? Hints below:

2. DOES IT MATTER? Matter is everything around you. Matter is anything made of atoms and molecules. Matter is anything that has mass and takes up space. Are you matter? List some items around you that are matter. Matter comes in 4 states: solids, liquids, gases, plasmas MASS = the amount of stuff in an object…. measure of the amount of matter in the object. Volume = how much a three-dimensional space enclosed by some closed boundary can hold…..for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains

3. WHICH DO YOU THINK WOULD HAVE THE GREATER VOLUME AND MASS? WHY? 1 kg of feathers1 kg of rock

4. Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the amount of matter within a certain volume.

5. PROOF THAT WATER AND ICE HAVE DIFFERENT DENSITIES

6. TO FIND THE DENSITY 1- Find the mass of the object 2- Find the volume of the object 3- Divide Density = Mass Volume

7. UNITS FOR DENSITY G/CM 3 OR G/ML Formula: M = mass V= volume D = density M = D x V V = M / D D = M / V

8. 1)Find the mass of the object 2)Find the volume of the object 3)Divide : Density = Mass - Volume To find density : Ex. If the mass of an object is 35 grams and it takes up 7 cm 3 of space, calculate the density.

9. 1)Find the mass of the object 2)Find the volume of the object 3)Divide : Density = Mass - Volume To find density : Set up your density problems like this: Given: Mass = 35 gramsUnknown: Density (g/ cm 3 ) Volume = 7 cm 3 Formula: D = M / VSolution: D = 35g/7 cm 3 D = 5 g/cm 3 Ex. If the mass of an object is 35 grams and it takes up 7 cm 3 of space, calculate the density.