Chemistry Classification of Matter

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Matter created ex nihilo

From nothing
How can we know where matter comes?

Faith
Physical properties can be measured without changing the substance
Chemical Properties
- Substance changed into something else
- physical change also occurs
Ex. of Physical properties
- Ductility
- maleability
- conductivity
- density
Ducitilty

How easily it can be drawn in thin wires
Maleability

Describes how matter can be hammered into shapes
If it doesn't change chemical formula than it is physical property
Ex. of Chemical Properties

Flammable, reactive, oxidizes
Mixtures

Two or more pure substances physically placed together, not chemically joined
Pure Substance

one kind of particle
heterogeneous
- type of mixture
- different kinds of particles are visible
- sand and rocks
Homogeneous
- type of mixture
- different particles are not visible
- salt water
Solution

same as homogeneous mixture
Solution vs. pure substance
- A pure substance has fixed composition.
- A mixture has a variable composition
element
- (pure substance)
- cannot be broken down by ordinary chemical means
Atom

smallest part of an atom
element 3 category
- Monatomic
- diatomic
- polyatomic
compounds

molecules from two or more elements that have been chemically bonded together
Subscript

A number that indicates the amount of atoms or groups of atoms in a formula
Coefficient

A number in front of a formula which tells how many molecules or atoms are present.
Molecule

two or more atoms that are chemically bonded together
oil and vinegar

Heterogeneous mixture
iron

element
Air

Homogeneous Mixture
Potassium Chloride

Compound
Seawater

Homogeneous Mixture
Glucose

compound
water compound
Soil

Heterogeneous

Author

JJ73

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Card Set

Chemistry Classification of Matter

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Updated

9/12/2013, 6:30:10 AM

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