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General Chem Test

General Chem test revision

TermDefinition
chemical reaction new substances formed
physical reaction no new substances formed
chemical reaction indicators release of light or sound
physical reaction examples rolling dough
chemical reaction examples boiling an egg
molecule a group of atoms bonded together
mixture a combination of substances that can be physically separated
ionic bonding electrons are lost or gained
covalent bonding electrons are shared
valence electrons electrons in the outermost shell
electron configuration the arrangement of electrons
cation positive ion
anion negative ion
period rows on the periodic table
group columns on the periodic table
element a substance that cannot be broken down into smaller parts
atomic number number of protons or electrons
atomic mass number of protons and neutrons
ion a charged atom
trends on the periodic table increasing in reactivity from right to left
electron charge negative
neutron charge neutral
proton charge positive
location of electrons shells
location of protons and neutrons nucleus
neutral atom an atom with no charge
isotope elements with different neutron and mass numbers
properties of metals conducts electricity
noble gas elements in group 8
the most reactive group on the periodic table group 1
why are noble gasses stable and unreactive? they have a full outer shell of electrons
Created by: justineforrest
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