The Periodic Table

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Transcript The Periodic Table

Today’s Agenda:
•Notes on the periodic table
•Periodic table activity
•HW: Read section 6-1 and answer
questions 1-6 on page 158
Periodic Table of the Elements:
Periodic Table of the Elements:
hot / cold
moist / dry
Periodic Table of the Elements:
Periodic Table of the Elements:
•In the 1800’s, chemists began using
electricity and spectrometers to
separate and identify elements
•Once they could measure the
atomic mass, patterns began to
emerge
Periodic Table of the Elements:
•In the 1800’s, chemists began using
electricity and spectrometers to
separate and identify elements
•Once they could measure the
atomic mass, patterns began to
emerge
•John Newland arranged the
elements like musical octaves.
Periodic Table of the Elements:
Periodic Table of the Elements:
•Dmitri Mendeleev made the first
periodic table.
Groups or Families
Periods
Representative Elements
Transition Elements
Metals, metaloids, nonmetals
Alkali metals
Alkaline earth metals
halogens
Noble gasses
Periodic Table of the Elements:
Periodic Table of the Elements:
Periodic Table of the Elements:
Periodic Table of the Elements:
Periodic Table of the Elements:
.
Vocabulary:
Atomic radius
Half the distacne between two
bonded atoms
Electronegativity
How strongly an atom attracts
electrons
Ionization energy
Energy required to remove an
electron from an atom.
Quick Work:
1. Turn to page 155
2. Using the periodic table as a
guide, describe the trends that
you see in melting point,
boiling point, and atomic
radius for the alkali metals
3. Answer the “Thinking
Critically” questions.
Homework:
•Read section 6-1
•Answer questions 1-6 on page 158