Download The Periodic Table

1. Element
• A fundamental material
consisting of only one
type of atom
2. Periodic Table
• A chart in which all
known elements are
organized by their
properties
3. Atomic Symbol
•An abbreviation for
an element or
atom.
4. Atomic nucleus
• The dense, positively
charged center of every
atom.
5. Electron
• An extremely small,
negatively charged
subatomic particle found
outside the atomic nucleus.
6. Proton
• A positively charged
subatomic particle of
the atomic nucleus
7. Atomic number
•A count of the
number of protons
in the atomic
nucleus
8. Neutron
• An electrically neutral
subatomic particle of
the atomic nucleus
9. Nucleon
• Any subatomic particle
found in the atomic nucleus.
Another name for either
proton or neutron.
10. Isotope
• Atoms of the same element
whose nuclei contain the same
number of protons but
different number of neutrons
11. Mass number
• The number of nucleons
(protons and neutrons) in the
atomic nucleus. Used
primarily to identify isotopes.
12. Atomic mass
• The mass of an element’s atoms
listed in the periodic table as an
average value based on the relative
abundance of the element’s
isotopes.
13. Metal
•An element that is shiny,
opaque, and able to conduct
electricity and heat
14. Nonmetal
•An element located toward
the upper right of the
periodic table and is neither
a metal or metalloid
15. Metalloid
•An element that exhibits
some properties of metals
and some properties of
nonmetals.
16. Period
•A horizontal row
in the periodic
table.
17. Group
•A vertical column in the
periodic table, also known
as a family of elements
18. Periodic trend
•The gradual change of
any property in the
elements across a period.
RQ 1
•You can expect to find
one type of atom in a
sample of any element
RQ2
• The difference between atom and
element is atoms are submicroscopic
particles that make up elements and
element refers to the microscopic and
macroscopic samples.
RQ
3
• The electric force of repulsion that
occurs between atoms as they meet
prevents us from being able to
walk through walls.
RQ 4
• Electric repulsion prevents
atoms from squishing into one
another unless they are joining
in a chemical bond.
RQ 5
•A proton is 2000 times
more massive than an
electron
RQ 6
•The electric charge of
a proton is + and – for
an electron
RQ 7
• The atomic number is the number of
protons in the nucleus of an atom.
RQ 8
•Elements in the periodic
table are listed in order of
increasing atomic number.
RQ 9
• Atomic mass is the weighted
average of the masses of all the
isotopes based on their relative
abundance by percent.
RQ 10
• Protons and neutrons are two nucleons
RQ 11
• Atomic number is the number of
protons in the nucleus and mass
number is the total number of
nucleons (the protons and
neutrons) in the nucleus.
RQ
12
Mass number is the count of
nucleons in an isotope and atomic
mass is the measure of the average
mass of an atom including the relative
abundance of its element’s isotopes.
RQ
13
•The periodic table
organizes elements based
on physical and chemical
properties.
RQ 14
•Most elements are
metals
RQ
15
• Hydrogen is considered nonmetal
because it only behaves like a liquid
metal at very high pressures. Under
normal conditions H atoms combine
to form H2 which behaves like a gas.
RQ 16
• Metalloids are located
between metals and
nonmetals.
RQ 17
• The periodic table has
7 periods and 18
groups.
RQ 18
• Group 17 elements are called
halogens because they form
salts and halogen means salt in
Greek.
RQ 19
• Group 18 also called
the noble gases are all
gases at room
temperature.
RQ 20
• Transition metals are not listed in the main
body of the periodic table so it will fit on
one page.