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Matter that is composed of two or more different elements chemically combined in a fixed proportion is classified as
A compound
A compound can be decomposed by
a chemical reaction
A compound always has a
homogenous composition
A heterogenous material may be
A mixture
A mixture can
be seperated by physical means
What must be a mixture of substances
A solution
Can you chemically break down a compound
Yes
Can you chemically break down an element
No
what is CCI4 classified as? compound or element?
a compound
what is a pure substance with only 1 atom
An element
What is a pure substance with more than 1 atom
A compound
what is a substance that cant be broken down
pure substance
characteristics of solid matter
>Definite volume
>Definite shape
>particles vibrate
> symbol (s)
characteristics of liquid matter
> definite volume
> takes shape of container
> constant motion
> symbol (L)
characteristics of gas matter
>no definite volume
> fills a container(spread)
> compressible
> greatest amount of movement
> symbol (G)
characteristics that don’t change the substance is known as
physical change
what is it called when NO NEW SUBSTANCE is produced
Physical change
A sign of physical change
still the same substance but in different form
characteristics thatchange the substance is known as
Chemical change
what is it called when A NEW SUBSTANCE is made
Chemical change
Note 
Flashcard (44)