properties of matter. physical properties chemical properties
TRANSCRIPT
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