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Matter
Matter vocabulary
27
Science
6th Grade
09/07/2017

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Term
matter
Definition
composes any physical substance
Term
atom
Definition
the smallest unit of an element
Term
element
Definition
basic building block of physical matter; cannot be broken down to a simpler form
Term
molecule
Definition
a single unit of a compound or group of elements bonded together
Term
compound
Definition
a chemical substance of two or more atoms of elements bonded together
Term
periodic table
Definition
a chart organizing chemical elements that compose all matter; listed by atomic number and related groups
Term
solid
Definition
state of matter composed of tightly packed molecules, resulting in a firm substance
Term
liquid
Definition
state of matter composed of freely moving molecules that do not usually separate
Term
gas
Definition
state of matter composed of freely moving molecules capable of indefinite expansion
Term
phase change
Definition
a change from one state of matter to another
Term
physical property
Definition
property of a substance that can be measured without changing chemical properties
Term
solubility
Definition
the amount of a solute that can be dissolved into a liquid(solvent) in a give situation
Term
boiling point
Definition
temperature at which a liquid boils
Term
melting point
Definition
temperature at which a solid melts
Term
freezing point
Definition
temperature at which a liquid freezes
Term
density
Definition
amount of mass per unit of volume(D=m/v)
Term
mass
Definition
a measure of the total amount of matter contained within an object
Term
volume
Definition
a measure of the amount of space an object fills
Term
weight
Definition
a measure of the gravitational force acting on an object
Term
triple-beam balance
Definition
used to measure mass
Term
solvent
Definition
any liquid that dissolves a substance
Term
solute
Definition
the substance that gets dissolved in a solution
Term
pure substance
Definition
a substance that is composed of only one type of atom or molecule
Term
temperature
Definition
a measure of the warmth or coldness of an object or substance
Term
chemical change
Definition
the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance
Term
specific heat
Definition
the number of calories required to raise the temperature of 1 gram of a substance 1°C
Term
chemical reactivity
Definition
the tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy
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