Title: The Periodic Table
1The Periodic Table
2(No Transcript)
3Define the following
- Atomic Number
- Valence electrons
- Energy levels
- Period
- Family
4Make sure you have assess to a periodic table
5Where do I find the atomic number on a periodic
table?
6Where do I find the energy levels on a periodic
table?
7Where do I find the period on a periodic table?
8Where do I find the valence electrons on a
periodic table?
9Where do I find the family on a periodic table?
10Find magnesium
- How many total electrons are in a magnesium atom?
- Which period is magnesium in?
- How many energy levels does it have?
- Which group or family does magnesium belong to?
- How many valence electrons does it have?
11Find calcium
- How many total electrons are in a calcium atom?
- Which period is calcium in?
- How many energy levels does it have?
- Which group or family does calcium belong to?
- How many valence electrons does it have?
12Group 2 elements
- What do all elements in Group 2 have in common?
- How many valence electrons do they have?
- How does this affect how they react with other
elements?
13Experiment
Predict what will happen if samples calcium,
magnesium and aluminum are put into an HCl
solution
Ca
Mg
Al
3 test tubes of HCl
14Group/Family
- What do all members of a group/family on the
periodic table have in common? - What is the relationship between an elements
group/family and the number of valence electrons
that element has? - How does an elements group/family affect how it
bonds with other elements?
15Group 18
- What are elements in Group 18 called?
- What is so special about Group 18?
- How does this affect how elements in Group 18
bond?
16Periodic Law
- the statement that the physical and chemical
properties of the elements repeat in a regular
pattern when they are arranged in order of
increasing atomic number. - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
17Periodic Table
- The periodic table is a tabular arrangement of
the chemical elements by increasing atomic number
which displays the elements so that one may see
trends in their properties. - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
18Valence electrons
- electrons in the outermost energy level of an
atom. - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
19Electron configuration
- the most stable arrangement of electrons in
sublevels and orbitals. - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
20Oxidation number/ion charge
- the charge of an ion or an element can be
positive (metals - cations) or negative(nonmetals
anions) - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
21Atomic number
- the number of protons in the nucleus of an atom
(increases as you move across and down the
periodic table) - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
22Average atomic mass
- The average mass of atoms of an element,
calculated using the relative abundance of
isotopes in a naturally-occurring element. - Understanding Level 1 2 3 4
- Define (in your own words) ______________________
__________________________________________________
________________________________ - Draw
23Al 3 SO4 2-According to this information,
what is the chemical formula for aluminum
sulfate? (Apr'04 11th - 23)A. AlSO4B.
Al2(SO4)3C. Al3(SO4)2D. Al6SO4
24B
25Calcium (Ca2) Chloride (Cl-) ? Calcium
chloride The chemical formula for calcium
chloride is _____. (Apr'04 11th - 38)A.
Ca2ClB. CaClC. CaCl2D. Ca2Cl3
26C
27Silver bromide is a type of halide. Halogens or
elements from group 17 in the periodic table are
necessary to form halide compounds. Which of the
following is the correct formula for silver
bromide? A. SiBr4B. Si7BrC. Ag7BrD. AgBr
28D
29According to the periodic table, which of these
elements will form an ion with a 2 charge?
(Jul'06 11th -34)A. SB. MgC. FD. Rb
30A
31According to the periodic table, which element
most readily accepts electrons? (Spr'03 11th
-23)A. FluorineB. NitrogenC. ArsenicD.
Aluminum
32A
33The bonding characteristics of oxygen are most
similar to the bonding characteristics of _____.
(Apr'06 11th -9 and Fall'05 11th -37)A.
hydrogenB. siliconC. heliumD. sulfur
34D
35The ionic compounds that result from combining
Group 2 and Group 16 elements have a 11 ratio
because _____. (Feb'06 11th -45)A. Group 2
elements are electrically neutralB. Group 2
elements have two valence electronsC. Group 2
elements contain neutrons in the nucleusD. Group
2 contains more elements than other groups
36B
37Elements found in which shaded area of this
periodic table undergo the fewest chemical
reactions? A. QB. RC. SD. T
38D
39According to the periodic table and the
information above, which element has this
electron configuration? A. SodiumB. NeonC.
MagnesiumD. Argon
40D
41Elements in Group 16 of the periodic table
usually _____. A. form large moleculesB. gain
electrons when bondingC. act like metalsD.
solidify at room temperature
42B
43Which of the following groups contains members
with similar chemical reactivity? A. Li, Be,
CB. Be, Mg, SrC. Sc, Y, ZrD. C, N, O
44B
45An unidentified element has many of the same
physical and chemical properties as magnesium and
strontium but has a lower atomic mass than either
of these elements. What is the most likely
identity of this element? A. SodiumB.
BerylliumC. CalciumD. Rubidium
46B
47A certain atom has a nucleus containing six
protons and eight neutrons and has six electrons
orbiting the nucleus. This atom is a form of the
element _____. A. siliconB. carbonC.
magnesiumD. calcium
48B
49Calcium ions play an important role in the
function of neurons in the brain. Elements that
are chemically similar to calcium can interfere
with the function of neurons. Which of the
following is most likely to imitate calciums
role in the function of neurons? A. sodiumB.
potassiumC. strontiumD. rubidium
50C