Properties of Matter

• Physical Properties

• Chemical Properties

Physical Properties

• Mass

• Color

• Melting Point

• Boiling Point

• Density

• State (at normal conditions)

States of Matter

Density Energy/Temperature

• Plasma

• Gas

• Liquid

• Solid

• Neutronium

• Black Hole

Transitions (a physical Change)

Gas

Condensation Vaporization

Boil

Liquid

Solidify Melt

Freeze

Solid

• Physical Change

Mixtures

Heterogeneous Homogeneous

Solution

Mixtures can vary in composition / amount

Separation of Mixtures

• Using Physical Methods / Physical Properties

• Salt and pepper

• Salt and sand

• Water and salt

• Water and Alcohol– distillation

Elements and CompoundsMatter

Mixture of SubstancesSubstance

Element Compound Homogeneousmixture

Heterogeneousmixture

(solution,uniform)

(nonuniform,layers, “phases”)

(Definite Composition) (Variable Composition)

Elements and Compounds

• So Whats the difference between Elements and Compounds

Compounds – Made of 2 or more Elements - Can be chemically separated

Elements – only one type of substance

• Is it important???

• Well, getting some definitions straight is good…

• And, it lets you know what kinds of things might go on…

• Like, what happens when you had Sodium and Chlorine – or Sodium to Water?

Chemical Reaction

• OK – what happens when you put Na with Cl2?

2Na + Cl2 -> 2 NaCl

Reactants -> Products

Cool, a poison plus a poison makes salt – not a poison!

How do you know it’s a Chemical Reaction?

• Energy is Absorbed (cools) or Released (gives off heat)

• Light! (sound)• Color change• Gas formed, Solid formed (precipitate)

• Not easily reversible• (are there exceptions to these… well, yes)

Conservation of MassConservation of Energy

• In a chemical reaction* – matter cannot be created nor destroyed

• In a chemical reaction* - Energy cannot be created nor destroyed

Hold on – what about atomic bombs

• OK – you got me – the REAL answer is

• Matter and energy can neither be created nor destroyed – it can only change forms.

Baker - @ Bikini - RMI

DisclaimerAloha

I put together these power points for use in my science classes.You may use them in your classes.

Some images are public domain, some are used under the fair-use provisions of the copyright law, some are mine. Copyright is retained by the owners!

Ted Brattstrom