Chemical & Physical Properties of Matter

Chemical Properties Characteristics that are observed ONLY when a substance changes into a different substance

Chemical Properties Types of Chemical Properties: Combustible/flammable: able to burn

Chemical Properties Types of Chemical Properties: Combustible/flammable: able to burn Examples & Facts: all chemicals come with a label that identifies their level of flammability

Chemical Properties Types of Chemical Properties: Combustible/flammable: able to burn Examples & Facts: oxygen & hydrogen are very flammable gases carbon dioxide is not a very flammable gas

Chemical Properties Types of Chemical Properties: Reactivity: how easily a substance reacts with another substance

Chemical Properties Types of Chemical Properties: Reactivity: how easily a substance reacts with another substance Examples & Facts: many chemicals react with water or oxygen all chemicals come with a label that identifies their level of reactivity

Chemical Properties Types of Chemical Properties: Reactivity: how easily a substance reacts with another substance Examples & Facts: corrosion: slow reaction & wearing away of metals (rusting, tarnishing)

Physical Properties Characteristics that can be observed without changing the substance into something else

Physical Properties Types of Physical Properties: color texture odor taste hardness magnetic boiling, melting, & freezing points

Physical Properties Types of Physical Properties: Luster: shininess or dullness

Physical Properties Types of Physical Properties: Luster: shininess or dullness Examples & Facts: most metals are shiny diamonds have a lot of luster many minerals are dull

Physical Properties Types of Physical Properties: Brittleness: how easily a substance breaks into pieces

Physical Properties Types of Physical Properties: Brittleness: how easily a substance breaks into pieces Examples & Facts: very brittle substances may crumble or break with very little force

Physical Properties Types of Physical Properties: Brittleness: how easily a substance breaks into pieces Examples & Facts: many rocks & minerals are brittle chalk is brittle because it crumbles easily

Physical Properties Types of Physical Properties: Malleable: can be pounded into shapes

Physical Properties Types of Physical Properties: Malleable: can be pounded into shapes Examples & Facts: aluminum is very malleable clay is also malleable substances that are malleable are usually not very brittle

Physical Properties Types of Physical Properties: Ductile: can be pulled out into a long wire

Physical Properties Types of Physical Properties: Ductile: can be pulled out into a long wire Examples & Facts: substances may be both malleable & ductile copper is very malleable & ductile substances that are ductile are usually not very brittle

Physical Properties Types of Physical Properties: Conductive: can transmit heat and/or electricity

Physical Properties Types of Physical Properties: Conductive: can transmit heat and/or electricity Examples & Facts: a substance may conduct heat, electricity, neither, or both most metals are good conductors

Physical Properties Types of Physical Properties: Conductive: can transmit heat and/or electricity Examples & Facts: pots & pans are made out of metals that are good heat conductors

Physical Properties Types of Physical Properties: Soluble: can be dissolved in a liquid

Physical Properties Types of Physical Properties: Soluble: can be dissolved in a liquid Examples & Facts: substances that are “water- soluble” will dissolve in water salt & sugar are soluble in water substances that don’t dissolve are “insoluble”

Properties Practice 1.Choose an object from the “Bucket of Junk.” 2.Record the object’s name in the data table. 3.Check off each of the properties you observe and infer that object to have. 4.Return the object to the bucket and choose another. 5.Continue until you’ve identified the properties of 6 objects.