1. A physical property of matter
Density
A physical property of matter

2. What is density?
Density is a physical property of matter. It is the relationship between the mass of the substance and its volume. Mass is how much stuff (atoms and molecules) make up an object. Volume is how much space an object take up.
Low Density
High Density

3. The formula for density
𝐷𝑒𝑛𝑠𝑖𝑡𝑦= 𝑚𝑎𝑠𝑠 𝑣𝑜𝑙𝑢𝑚𝑒

4. Units used for density
𝑘𝑔 𝐿 , kilogram per liter 𝑔 𝑚𝐿 , gram per milliliter 𝑔 𝑐𝑚 3 , 𝑔𝑟𝑎𝑚 𝑝𝑒𝑟 𝑐𝑢𝑏𝑖𝑐 𝑐𝑒𝑛𝑖𝑡𝑚𝑒𝑡𝑒𝑟

5. Practice Problems
What is the density of a 1 liter bottle of water if it has a mass of 1 kg?
What is the density of a 1 ,000 g bar of gold if it has a volume of cm³?
What is the density of 20 mL of vegetable oil if it has a mass of 18.6 g?

6. Float or sink When an object has a higher density it will sink.
When an object has a lower density it will float.

7. Density bottle
Explain what is going on in the bottle