|
Word
|
Definition
|
adhesion
|
the force or attraction
that holds two separate objects together.
|
alloy
|
a mixture of metals
|
anion
|
an ion with a negative charge.
|
atom
|
The
smallest particle of an element.
|
atomic mass/weight
|
the total number of protons
and neutrons in an atom.
|
atomic number
|
the number of protons in
the nucleus of an atom as well as the number of electrons in a neutral
atom.
|
boiling point
|
temperature at which a liquid
changes to a gas.
|
brittleness
|
the property of matter that
is how easily the substance breaks or shatters when force is applied
to it.
|
catalyst
|
a substance that helps along
a chemical reaction or change without being changed itself.
|
cation
|
an ion with a positive charge.
|
chemical bonds
|
the process by which
atoms combine to form molecules.
|
chemistry
|
The science of matter
and the changes in matter.
|
cohesion
|
the attraction that holds
together the molecules within one substance.
|
colloid
|
a mixture in which the substance
is split into tiny particles and spread within a second substance.Examples
include smoke and fog.
|
compound
|
a substance made up of
two or more elements that are combined chemically.
|
concentration
|
the amount of a solvent
compared to the solute in a solution.
|
contract
|
to become smaller, closer
together
|
density
|
thickness of a substance
|
diffusion
|
when a substance spreads
out within another substance as when a solute spreads out within a solvent
in a solution, sometimes unevenly.
|
dissociation
|
separation of a substance
into atoms or ions.
|
ductility
|
property of a metal in which
it can be stretched without breaking.
|
elasticity
|
the ability of a substance
to be stretched and then to return to its original shape.
|
electricity
|
a form of energy coming
from charges.
|
electron
|
a particle of the atom
that has a negative charge. The electron is not a part of the nucleus,
but moves around in an orbit around the nucleus.
|
element
|
a substance made of one
kind of atom that cannot be broken down chemically.
|
endothermic reaction
|
When heat is given off curing
a chemical reaction.
|
energy
|
the ability to do work or
make change.
|
evaporation
|
changing of a liquid to
a vapor at any temperature below its boiling point.
|
exothermic reaction
|
When heat is absorbed during
a chemical reaction.
|
formula
|
tells what chemicals
a compound is made up of
|
hardness
|
property of matter that
determines how easily the substance can be scratched.
|
heat
|
a form of energy marked
by differences in temperatures
|
inorganic chemistry
|
the study of chemical elements
and compounds except for carbon.
|
ion
|
an atom or group of atoms
that have a net electrical charge
|
isotope
|
atoms with the same number
of protons, but different numbers of neutrons.
|
light
|
visible electromagnetic
radiation
|
liquie
|
a state of matter that has
a definite size or volume but not a definite shape.
|
malleability
|
the property of a metal
that allows it to be hammered, rolled, pressed or forged.
|
melting point
|
the temperature at which
a substance changes from a solid to a liquid.
|
mixture
|
several substances put
together that can be easily separated by physical means.
|
molecule
|
the
smallest particle of a substance that still is that substance.
|
nucleus
|
the
center of the atom consisting of the proton and neutron.
|
neutron
|
a
particle in the center of the atom with no charge.
|
organic chemistry
|
the study of the compounds
of carbon.
|
periodic table
|
A chart of all the elements
arranged by atomic number.
|
periodic table
|
chart of the elements arranged
in columns and rows according to the increasing atomic numbers.
|
property
|
a
characteristic of matter such as color, density, brittleness, etc..
|
proton
|
a
particle in the center of the atom that has a positive charge.
|
radioactivity
|
the breakdown or decay
of the nucleus of an atom by by the emission or giving off of particles.
|
solution
|
a mixture of two or more
in which two or more materials are dissolved in another material.
|
sound
|
a disturbance that travels
through air, land, water that can be heard.
|
sublimation
|
the changing of a gas directly
to a solid.
|
suspension
|
similar
to a solution, but the particles within the suspension can be seen by
the naked eye.
|
temperature
|
measure of how warm or cold
a substance is.
|
tensile strength
|
the resistance of a substance
to any force used to tear it apart.
|
