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Semester Exam Part 2.1
Chapter 2, Section 1
15
Science
6th Grade
12/13/2009

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Term
Matter
Definition
Anything that has mass and takes up space.
Term
Substance
Definition
A single kind of matter that is pure and has a specific makeup and properties.
Term
Physical Properties
Definition
A characteristic of a pure subsance that can be observed without changing it into another substance.
Term
2 Physical Properties
Definition
Hardness, texture
Term
Chemical Property
Definition
A characteristic of a pure substance that describes its ability to change into another substance
Term
1 Chemial Property
Definition
Flammability
Term
Element
Definition
A pure substance that cannot be broken down into any other substances by chemical or physical means.
Term
Atom
Definition
The basic particle from which all elements are made.
Term
Chemical Bond
Definition
A force of attraction between 2 atoms.
Term
Molecules
Definition
Groups of 2 or more atoms joined by chemical bonds.
Term
Compound
Definition
A pure substance made of 2 or more elements chemically combined in a set ratio.
Term
Chemical Formula
Definition
Shows the elements compound and the ratio of the atoms.
Term
Mixture
Definition
Made of 2 or more substances that are in the same place but not chemically combined.
Term
Heterogeneneous Mixture
Definition
You can see the different parts. Pure substances unevenly distributed throughout the mixture.
Term
Homogeneus Mixture
Definition
So evenly mixed you can't see the diffetent parts. The substances are evenly combined.
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