Can be observed or measured without changing the matter’s identity Adjective – descriptive word...
-
Upload
miranda-collins -
Category
Documents
-
view
215 -
download
3
Transcript of Can be observed or measured without changing the matter’s identity Adjective – descriptive word...
Chemistry Vocabulary: Part 2
Physical Properties Can be observed or measured without
changing the matter’s identity Adjective – descriptive word Examples
Color Smell Size/Shape Texture/Taste Temperature Density State (Solid, Liquid, Gas)
Chemical Properties Substance ability to participate in
chemical reactions Hard to observe In order to see these you must
change the substance into a new substance
Examples Flammability Reactivity
Characteristic Properties Chemical or physical property that
is always the same no matter what size the sample is
Can be physical or chemical Most useful type of property Examples
Density Flammability Reactivity Boiling Point, Melting Point, Freezing Point Color Smell
Physical Changes A change of matter from one form to
another without a change in chemical properties
Usually reversible, no change to matter composition
End with the same thing you started with Examples:
Ripping Crushing Cutting Heating Cooling Coloring All changes of state
Chemical Changes A change that occurs when one or more
substances change into entirely new substances with different properties
Never reversible End with something different than you
started with Examples:
Soured Milk Burning Digesting Cooking/Baking Rotting/Spoiling Tarnishing
Signs of a Chemical Change Change in color Change in temperature Fizzing/Foaming Sound or light being given off New smell New taste Precipitate – when two liquids are
mixed together and form a solid
EndothermicEnergy is absorbed by a
substance or substances
ExothermicEnergy is released from a
substance or substances