CHEMISTRY
December 4, 2014
LAB 07 – GRAPHING TRENDS OF
PERIODIC TABLE
PRE-LAB STARTER
• Work on the Pre-Lab
Starter
• You are seated and silent
• You have 2 minutes
EXPLORATORY ACTIVITY
• Turn to Page 2
• You will 20 minutes to work on the
Exploratory activity (the graphs are
the last 2 pages of the package)
• You will also need to complete
questions 1-3 and 5-6 on pages 3 & 4
DEBRIEF
• Given the element Phosphorous (P). Without
looking at Table S, compare the atomic radius
of chlorine (Cl) and Magnesium (Mg) against P.
– You have 2 minutes to work with your partner to
agree upon an answer. Make sure you can
support your claim.
– Group Share
ATOMIC RADIUS
The Atomic Radius is an estimate of
the size of an atom or the distance
from the center of the nucleus to the
edge of the atom. It is an estimate
due to the fact the outer edge of an
atom is not distinct. Atomic radii are
measured in picometers.
FIRST IONIZATION ENERGY
The First Ionization Energy is defined
as the energy required to remove the
most loosely bound (outermost)
electrons from an atom. This electron
is one of the valence electrons. It is
measured in kilojoules/moles (kj/mol)
of atoms.
BOHR MODEL EXAMPLE 1
• Na and Mg
BOHR MODEL EXAMPLE 2
• Na and K
GUIDED PRACTICE
• Map the Halogen Groups onto Graph 2 and
Graph 4
• Go to Pages 3 and 4 and respond to Questions
4 and 7
EXIT TICKET
• USE THE FOLLOWING 6 TERMS IN 1-2 SUPER
SENTENCES
– ATOMIC NUMBER,
– ELEMENTS
– ATOMIC RADIUS
– IONIZATION ENERGY
– PERIODS
– GROUPS