Download Chemistry Vocab for Quiz 12/21 or 12/22 Atom – The smallest

Chemistry Vocab for Quiz 12/21 or 12/22
Atom – The smallest particle of an element.
Atomic number - The number of protons in the nucleus of an element
Atomic mass – The average mass of one atom of an element
Proton – A small positively particle in the nucleus
Neutron – a small particle in the nucleus with no charge
Electron – A tiny negatively charge particle that moves around the nucleus
of the atom
Nucleus –The central core of the atom containing protons and usually
neutrons
Molecule – A combination of 2 or more atoms.
Element – A substance that cannot be broken down into another substance
by physical or chemical means.
Compound – A substance made of 2 or elements chemically combined in a
specific ratio.
Chemical bond – the force that holds 2 atoms together.
Mixture – Two or more substances that are mixed together but not
chemically bound,
Physical change – A change that alters the form or appearance of a
material but does not make the material into a different substance.
Chemical change – A change in matter that produces a new substance.
Solution – A well mixed mixture.
Solubility – A measure of how well a solute can be dissolved at a given
temperature.
Solvent – The part of the solution present in the largest amount and that
dissolves other substances
Solute - The part of the solution present in the lesser amount and that is
dissolved by the solute.
Saturated solution – A mixture that has so much solute in it that no more
will dissolve.
Valence electrons – The electrons that are farthest away from the nucleus
of an atom and are involved in chemical reactions.