1.
Episode 201

2. Definition of Properties
Physical properties can be observed without chemically changing matter.
Chemical properties describe how a substance interacts with other substances.
Extensive properties are physical or chemical properties that depend on the amount of matter present.
Intensive properties are physical or chemical properties that do not depend on the amount of matter.
Episode 201

3. Examples of Properties
Physical
Chemical
Physical or Chemical? Extensive or intensive? Malleability Reactivity Density Combustibility Flammability Color Texture Acidity Mass Ability to rust Solubility
Intensive
Extensive
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4. Phases of Matter Solids Liquids Gases Plasma
Definite shape
Definite volume
Particles are packed together
Liquids
Indefinite shape
Particles have room to move
Gases
Indefinite volume
Particles are far apart
Plasma
High energy state where electrons are torn from the particles
Are phase changes considered to be a physical or chemical change?
Episode 201

5. Types of Change Physical change Chemical change
No change in the identity of the substance
Chemical change
One or more new substances are produced
PHASE CHANGES ARE PHYSICAL CHANGES.
Episode 201

6. Freezing point Melting point Boiling point Condensation point
Liquid to solid
Melting point
Solid to liquid
freezing point = melting point
Boiling point
Liquid to gas
Condensation point
Gas to liquid
Sublimation point
Solid to gas
Episode 201

7. Examples of Changes
Physical or Chemical? Phase change Tearing Grinding Combustion Acid rain Ductility Cooking MORE?
Physical
Chemical
Episode 201

8. Is new matter formed in physical or chemical changes?
Law of Conservation of Mass
Mass cannot be created nor destroyed.
Episode 201