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23 Cards in this Set

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Matter
anything that has mass and takes up space.
Mass
the amount of matter that an object contains.
Substance
Matter that has a uniform and definite composition.
Physical property
a quality or condition of a substance that can be observed or measured without changing the substance’s composition.
Solid
matter that has definite shape and volume.
Liquid
the form of a matter that flows, has a fixed volume, and takes the shape of its container.
Gas
a form of matter that takes both the shape and volume of its container.
Vapor
the gaseous state of a substance that is generally a liquid or solid at room temperature.
Physical change
a change in matter that doesn’t alter the chemical composition of the material.
Mixture
a physical blend of two or more substances.
Heterogeneous Mixture
a mixture not uniform in composition.
Homogeneous Mixture
a mixture with completely uniform composition. Also called a SOLUTION.
solutions
HOMOGENEOUS MIXTURE
phase
any part of a system with uniform composition and properties.
distillation
a method of separating components in tap water. Boil the water to produce a vapor which is then condensed again to a liquid.
elements
the simplest forms of matter that can exist under normal laboratory conditions.
compounds
substances that can be separated into simpler substances only by chemical means.
chemical symbol
one or two letter symbol representing an element.
chemical reaction
one or more substances change into new substances.
reactants
the starting substances in a chemical reaction.
products
the substances formed in a chemical reaction.
chemical property
the ability of a substance to undergo a chemical reaction and to form new substances.
Law of Conservation of Mass
states that in any physical change or chemical reaction, mass is neither created or destroyed; it is conserved.