1. Properties of Matter

2. Matter Has mass (different than weight which is mass due to gravity)
Occupies space
Volume and weight are unreliable quantities
Temperature affects volume
Weight changes with location (higher the elevation, weight is less because less gravity)

3. Physical Properties Characteristic Examples: Observed or measured
Doesn’t change the makeup of the substance
Examples:
Color, odor, taste, hardness, density, melting point, boiling point
People are used to identifying something based on its properties…

4. Physical properties of metals
Ductile: can be drawn into a wire
Malleable: can be hammered into sheets
Luster: shine
Good conductor of heat and electricity

5. Density Ratio of mass to volume Density = mass / volume
Common units of density:
kg/m3, g/cm3, g/mL
Practice Problem: A piece of lead has a mass of 22.7 g. It occupies a volume of 2.0 cm3. What is the density of the lead?
D= 22.7/2= 11.4 g/cm3

6. Practice Problem 2
A piece of lead occupies a volume of 4.0 cm3. What is the mass of the lead if density is 11.4 g/cm3?

7. Practice Problem 3
A piece of lead (density 11.4 g/cm3) has a mass of 302 g. What volume does it occupy?

8. Chemical Properties
Properties that describe how the substance interacts (or fails to interact) with other substances to produce new substances
Example:
Rust
combustion

9. States of Matter Solid Liquid Gas Definite shape and definite volume
Flows, constant volume, and takes the shape of a container
Gas
Flows to conform to the shape of the container, fills the entire volume of the container
Plasma- naturally does not occur on Earth (except lightning) found in the stars and sun
Plasma = ionized gas (most common phase of matter in the universe)