bellwork *write the answer and a short explanation as to why you chose that answer
TRANSCRIPT
Bellwork Question #1 Why is cobalt (Co) placed before nickel (Ni)
on the periodic table of the elements even though it has a higher average atomic mass than nickel? A. Nickel has one more proton. B. Cobalt was discovered first. C. Nickel has fewer electrons. D. Cobalt has a lower density.
Bellwork Question #2 Which of the following will allow you to
always determine the identity of an element?A. The number of protonsB. The number of electronsC. The number of neutronsD. The atomic mass
Bellwork Question #3 Two elements have the same number of
protons but different numbers of neutrons, these two elements are known as: A. Family MembersB. IsotopesC. Beta ParticlesD. Atomic mass units
Bellwork Question #4 The atomic number of Sodium is 11 and
the atomic mass of Sodium is 23. Which of the following shows how many neutrons sodium has? A. 11B. 12C. 23D. 34
State Standard 1a
Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass.
Subatomic Particles
A proton is a positive particle A neutron is a neutral particle An electron is a negative particle The proton and neutron are in the nucleus.
State Standard 1b
b. Students know how to use the periodic table to identify metals, semimetals, non-metals, and halogens.
Types
Elements on the periodic table belong to one of three types metals, nonmetals and semimetals (metalloids)
Families/Groups
Elements on the periodic table belong to families/Groups.
These families are- Alkali Metals, Alkaline Earth Metals, Transition Metals, Halogens and Noble Gases.
State Standard 1c
c. Students know how to use the periodic table to identify alkali metals, alkaline earth metals and transition metals, trends in ionization energy, electronegativity, and the relative sizes of ions and atoms.
Ionization Energy The energy required to remove one
electron from an atom. Ionization energy increases as you
move to the right and up.
Electronegativity The ability of an element to attract
electrons. Electronegativity increases right and up.
Ions An ion is an element with a charge. Cations (positive ions) are smaller
than anions (negative ions).
State Standard 1dd. Students know how to use the periodic table to determine the number of electrons available for bonding.
Number of Electrons Available for Bonding Bonding Electrons AKA Valence Electrons Valence Electrons are the electrons in the
outer orbital.
Lewis Structure Lewis Structure is the chemical symbol
surrounded by the number of valence electrons.
Question 2
What family does Chlorine belong to? a. Alkali Metals b. Alkaline Earth Metals c. Transition Metals d. Halogens
Question 3
The largest family on the periodic table is:
a. Alkali Metals b. Alkaline Earth Metals c. Transition Metals d. Halogens
Question 4
Families on the periodic table share the same number of:
a. Protons b. Electrons c. Valence Electrons d. Neutrons
Question 5
A subatomic particle that carries no charge and has a mass nearly equal to that of a proton is a
A. proton. B. neutron. C. electron. D. isotope.
Question 6
Comparing Oxygen, Sulfur, Nitrogen and Phosphorus.
A. Oxygen is the largest ion. B. Sulfur is the largest ion C. Nitrogen is the largest Ion D. Phosphorus is the largest ion.
Question 7
Which of the following atoms has the largest atomic radius?
A barium (Ba) B chlorine (Cl) C iodine (I) D magnesium (Mg)