Transcript 2 periodic table pd9

Day 5
Use your colored periodic table:
2-19
1. Where are the alkaline earth
metals on the periodic table?
2.
noble gas
Neon is a __________.
3.
The elements in the middle of the
periodic table (or the d-block are
transition metals
called the _________________.
How is the periodic
table arranged?
Metals
Excellent conductors (Sea of
electrons) even as solids
Mobile electrons
Can be pulled
into wire
Metals are malleable and ductile
Can be pounded
into sheet
Read / review
Section 6.2 and
complete #s 11-17
on page 173
Day 6 2-20
1. Most reactive metals =
the _______ metals.
2. Least reactive metals =
_________.
3. Most reactive nonmetals =
________.
1.
Elements with the same Day 6 2-20
# of valence are in the same
_______ on the periodic table.
alkali metals = __ valence
alkaline earth metals = __ valence
halogens = __ valence
noble gases = __ valence
We are taking an ATB quiz on today’s ATBs in 5 minutes.
Periodic Trends
Atomic radius:
- Measure of size – radius of an
atom
- Atoms with more electrons do
NOT necessarily have a larger
atomic radius
Periodic Trends
- Atoms with more electrons do NOT
necessarily have a larger atomic
radius
Periodic Trends
- Atoms with more
1. Atoms get larger
electrons do NOT
going down a
necessarily have a
group.
larger atomic radius
2. Atoms get
smaller going
across a period
So why?...
Periodic Trends
- Atoms with more
As you move down
electrons do NOT
a group you
necessarily have a
larger atomic radius increase the
number of energy
levels in the atom
and so the atom
gets larger as
expected.
Periodic Trends
- Atoms with more As you move across
a period, # of
electrons do NOT
protons increases
necessarily have a
larger atomic radius and outermost
energy level stays
the same, the
attractive force
between elecs. and
pros. pulls the atom
tighter (closer to
nucleus)
Periodic Trends
What’s bigger:
B or Al
B or N
N or Zn
C or Cl
Read / review
Section 6.2 and
complete #s 11-17
on page 173
Day 1 2-21
1. Which halogen is found in period 2?
2. How many valence electrons does
calcium have?
3. Why does the size of an atom
increase moving down a group?
Review
1. What element is in Group 2,
Period 3?
2. Name an element in Group 3
3. How many valence electrons
in Xe?
4. Give me an element with 1
valence electron.
Partner Review
1. What element is in Group 17,
Period 3?
2. What family of elements is the
element above in?
3. How many valence electrons
does it have?
Periodic Trends
What are ions?
Notes
page 4
- atoms that are charged due
to the loss or gain of
electrons
- If an atom loses elecs. it becomes
smaller and positive
- If an atom gains elecs. it becomes
larger and negative
Periodic Trends
What are ions?
- If an atom loses elecs. it becomes
smaller
- If an atom gains elecs. it becomes
larger
PAGE 176-179
Which elements gain elecs.? Which
elements lose elecs.? Pattern?
Periodic Trends
Elements on the right side of
the periodic table form
negative ions
_________
Elements in the same group
The same ions
form ___________
Periodic Trends
What’s bigger:
F or
F
Na or
+
Na
Na or Rb
Na of Al
F or Cl-
Day 6 2-20
1.
Most reactive metals = the ____________
metals.
2.
Elements with the same # of valence are
in the same ___________ on the periodic
table.
3.
Halogens = _____ valence.
Day 6 2-20
1.
Most reactive nonmetals = the _________.
2.
Elements with the same # of valence are
in the same ___________ on the periodic
table.
3.
Alkali metals = _____ valence.
Day 6 2-20
1.
Least reactive metals = the
____________ metals.
2.
Elements with the same # of valence are
in the same ___________ on the periodic
table.
3.
Alkaline earth metals = _____ valence.