2. Pure Substance
A pure substance is a homogenous
mixture and it cannot be separated into
another substance.
There are two different types pure
substances
Ex: Water is a pure substance.
3. Mixture
Two or more kinds of substances mixed
together.
There are two different kinds of mixtures:
Heterogenous and Homogeneous
Ex: salt water is a mixture
4. Heterogenous
Mixture
The composition of the mixture is different
everywhere in the mixture.
Ex: Trail Mix would be a heterogenous
mixture because you can see the different
things mixed together and you can
physically separate the mixture.
5. Homogeneous
Mixture
The composition of the mixture is the same
through the mixture. Everything is evenly
distributed in the composition.
Ex: Kool-Aid is a homogeneous mixture
because everything is easily distributed within
the drink
8. Chemical Change
A chemical change is when substances
combined together change into a new
substance.
Ex: The explosion of fireworks would be
a chemical change.
10. Physical Property
Any property used to characterize matter
and energy and their interaction.
Ex: Boiling point, Melting point,color,
smell, and Freezing point.
11. Property Change
A change from one state to another.
(solid, liquid, or gas)
Ex: Ice(solid)=====>>Water(liquid)
Water(liquid) =====>> Steam(gas)