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.

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

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

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

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

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

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

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

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

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

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

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