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Describing Matter/Chem.Ch1
Describing Matter/Chemistry Chapter 1 /6thgrade
23
Science
6th Grade
09/27/2011

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Term
Chemistry Describing Matter Chapter 1/6th
Definition
Term
Chemical Change
Definition
A change that produces one or more new substances.
Term
Boiling Point
Definition
The boiling point of water is 100 degrees celsius
Term
Atom
Definition
The smallest particle of an element.
Term
John Dalton
Definition
Proposed a theory that an atom cannot be broken apart.
Term
Molecule
Definition
Can contain just a few atoms or as many as a billion atoms.
Term
An example of changing a substance physically is
Definition
Blending a milkshake
Term
An example of changing a substance chemically is
Definition
Burning wood
Term
Many substances share melting points, boiling points, or other characteristics.
Definition
These are all needed to accurately identify a substance.
Term
Elements
Definition
Substances that CANNOT be broken down chemically into other substances. They are composed of extremely small particles called atoms.
Term
Weight
Definition
The measurement of the forces of gravity on an object.
Term
Mass
Definition
The measurement of how much matter an object contains.
Term
Democritus
Definition
A Greek philosopher who came up with the idea of atoms.
Term
Molecule
Definition
A group of atoms that are joined together and act as a single unit.
Term
Chemical Bonds
Definition
Hold atoms together in a molecule.
Term
Density
Definition
Divide an object's mass by its volume.
Term
Kilogram
Definition
The SI measurement for mass
Term
Mixture
Definition
A type of matter that consists of two or more substances that are NOT chemically combined.
Term
Examples of different States of Matter
Definition
Liquid water(liquid), Ice(solid), and Water Vapor(gas)
Term
Melting Point
Definition
The temperature at which a pure solid changes to a liquid.
Term
Volume
Definition
Measured in units of liters, milliliters,and cubic centimeters.
Term
Compound
Definition
A substance formed from two or more elements that are CHEMICALLY combined.
Term
Compound
Definition
A substance formed from two or more elements that are CHEMICALLY combined.
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