1. Properties of Matter
We can state properties of a substance by making observations.
Physical Properties - used to describe a substance.
Chemical Properties - describe how a substance changes.

2. Types of Physical Properties
Malleability - can be molded into different shapes
Luster - shininess
Solubility - ability to dissolve in something
Phase Changes - melting, boiling, freezing
Ductility - can be made into a wire
Color, Density
Texture, Smell

3. Describe the physical properties of a raw egg.
Clear egg white, round yellow yolk, fluid…

4. Types of Chemical Properties
Flammability - ability to catch fire
Combustibility - ability to blow up
Reactivity - ability to react with substances
Neutralization - can neutralize an acid
© 2013 S. Coates

5. Is this a physical or chemical property?
hardness
flammability
Melting point
Reacting with acid to form H2

6. Phases of Matter Temporary changes are called PHYSICAL changes.
Matter can change phases permanently or temporarily.
Temporary changes are called PHYSICAL changes.
Permanent changes are called CHEMICAL changes.
© 2013 S. Coates

7. Phases of Matter
Physical Changes: only the phase changes, the substance does not.
Physical changes usually change the size or shape of the substance.
Examples of physical changes include:
Examples of physical changes: water to ice, paper to confetti, wood to pencil
© 2013 S. Coates

8. Phases of Matter Chemical Changes: changes that create NEW materials.
The original materials are changed into something different.
Examples of chemical changes include:
Examples of chemical changes: wood to ash, metal to rust
© 2013 S. Coates

9. The bottle rocket is being turned into a new substance.
Phases of Matter
Is this a chemical change, or a physical change?
Chemical
The bottle rocket is being turned into a new substance.
© 2013 S. Coates

10. Physical Phases of Matter
Is this a chemical change, or a physical change?
Physical
The ingredients for ice cream are mixed and cooled in a machine. The ice cream has the same chemical structure when it was a liquid as it does when it is a solid.
Mixing and cooling ice cream is a physical change
© 2013 S. Coates

11. The egg has been cooked, and that has changed it into a new substance.
Phases of Matter
Is this a chemical change, or a physical change?
Chemical
The egg has been cooked, and that has changed it into a new substance.
© 2013 S. Coates

12. Is this a physical or chemical change?
Physical and Chemical
Burning a candle
Breaking a rock in two
Digesting food into nutrients
Flattening clay