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Period Table
Phase Changes
States of Matter
Property
Change
100
A substance that cannot be broken down into any other substances by chemcial or physical means.
What is an Element?
100
Temperature at which a substance changes from a liquid to a gas.
What is the Boiling Point?
100
Matter with a define shape and volume; has tightly packed particles that move mainly by vibrating.
What is a Solid?
100
Element that has luster, is malleable and ductiel, and is a good conductor of heat and elctricity.
What is a Metal?
100
Substance that forms as a result of a chemical reaction.
What is a Product?
200
The smallest unit of an element.
What is an Atom?
200
Temperature at which a substance changes from a solid to a liquid.
What is Melting Point?
200
Matter with a definite volume but no definite shape; can flow from one place to another.
What is a Liquid?
200
Element that is usually a gos or brittle solid at room temperature and is a poor conductor of heat and electricity.
What is a Nonmetal?
200
A substance that enters into a chemical reaction.
What is a Reactant?
300
The number of protons and electrons in the nucleus of an element's atoms.
What is the Atomic Number?
300
Temperature at which a substance changes from a liquid to a solid.
What is the Freezing Point?
300
Matter that does not have a definite shape or volume; has particles that move at high speeds in all directions.
What is a Gas?
300
The amoung of heat necessary to raise the temperature og one gram of a given substance by one degree centigrade.
What is Specific Heat?
300
Chemcial reaction in which heat energy is absorbed.
What is a Endothermic Reaction?
400
Subtracting the atomic mass from the atomic number.
What is a Neutron?
400
To be changed from a liquid or solid into a vapor.
What is Evaporation?
400
Two or more substances that are mixed together in the same place but are not chemically combined.
What is a Mixture?
400
Something that insulates, especially a material or device that prevents the passage of electric current.
What is a Insulator?
400
Chemical reaction in which heat energy is released.
What is an Exothermic Reaction?
500
A stubstance made of two or more elements chemically combined in a set ration.
What is a Compound?
500
To change directly from a solid to a gaseous state, or from a gaseous to a solid state, without first becoming a liquid.
What is Sublimation?
500
A well-mixed mixture.
What is a Solution?
500
A substance through which electrongs move freely, transmitting heat or electricity.
What is a Conductor?
500
The chemical process of forming solid substances in a solution.
What is a Precipitation?