ATOMIC STRUCTURE - VOCABULARY
1. anion
a negatively charged ion
2. atom
the smallest component of an element having the chemical properties
of the element
3. atomic mass
total mass of the protons and neutrons in an atom, measured in atomic
mass units
4. atomic number
the number of protons in the nucleus of an atom
ATOMIC STRUCTURE - VOCABULARY
5. cation
a positively charged ion
6. electron
negatively charged particle; located in the space surrounding the
nucleus
7.
electron
cloud
a region around the nucleus of an atom where electrons are likely to be
found
8. ion
a particle that is electrically charged (positive or negative)
ATOMIC STRUCTURE - VOCABULARY
9. isotope
atoms with the same atomic number but with different numbers of
neutrons (different atomic mass)
10.
matter
anything that has mass and occupies space
11.
neutron
a subatomic particle that has no charge and that is found in the
nucleus of an atom
ATOMIC STRUCTURE - VOCABULARY
12.
nucleus of an
atom
the center of the atom which contains the protons and neutrons
13. proton
a subatomic particle that has a positive charge and that is found in the nucleus
of an atom
14. subatomic
referring to small particles that make up atoms, including electrons, protons,
and neutrons
ATOMIC STRUCTURE - VOCABULARY
15.
valence
electron
an electron that is found in the outermost shell of an atom and that determines
the atom's chemical properties