Periodic Table Task Cards
Halogen, Noble gas, Alkali Metal, Transition Metal? Noble gas, because that family all have 8 valence electrons (8 electrons in the outermost energy level)(except for He which has 2). This one is Neon.
A Bohr model shows an element with 10 electrons, 2 in the first energy level and 8 in the second. Which family does this element belong to and how do you know?
Alkaline earth metals
An element is discovered that has an atomic number of 38 and 2 valence electrons. The element is most likely in which family? alkali metals, alkaline earth metals, halogen or noble gases?
Halogens
An element is discovered that has an atomic number of 53 and 7 valence electrons. The element is most likely in which chemical group? Alkali metals, Alkaline Earth metals, halogens, noble gases
NonMetal
An unidentified element is a poor conductor of heat and electricty, and is a non-lustrous solid. Which group would this element belong to? Metal, Metalloids, Nonmetals or Noble gases?
:Mg (2 valence electrons because it is in group 2)
Draw the Lewis dot structure for Magnesium
Si with on dot on all four sides (to represent 4 valence electrons)
Draw the electron Dot Structure for Silicon
Halogens
Elements in a group on the periodic table are: diatomic molecules 7 valence electrons salt formers nonmetals Which group do these elements most likely belong to?
Noble gases
Elements in a group on the periodic table are: fairly non-reactive nonflammable high ionization energies complete valence shell Which group do these elements most likely belong to? Noble gases
They are from the Alkali metals family and have 1 valence electron and are very reactive.
Explain why Sodium (Na) and Potassium (K) exhibit similar chemical properties?
Explain how you would determine the number of neutrons in an atom
Find the atomic number to know the number of protons and subtract it from the mass number if you have it or atomic mass from periodic table.
Boron (B)
Guess Who? Elements in my group are classified differently than I am. I have three valence electrons and exhibit properties of both metals and nonmetals. Who am I? Lithium (Li), Beryllium (Be), Boron (B), Chlorine (Cl)
Look at the atomic number on the periodic table and that tells you the number of protons. For Iron it is 26.
How do you determine the number of protons for an element? Give the answer for Iron.
Protons=13, Neutrons=14, Electrons=13
How many protons, Neutrons and electrons does Aluminum have?
Protons=24, Neutrons=28, Electrons=24
How many protons, neutrons and electrons does chromium have?
He organized elements based on their atomic mass and left spaces for the ones not discovered yet. Even though they weren't discovered, he could predict their properties based on the elements they were close to that had been discovered.
Summarize Mendeleev's contribution to our understanding of the periodic table.
Fluorine (2 energy levels, 9 electrons, 7 valence electrons)
The following illustration depicts the Bohr model for which atom?
Oxygen (2 energy levels, 8 electrons, 6 valence electrons)
The following illustration depicts the Bohr model for which atom?
All are in Group 1, have 1 valence electron, lose 1 valence electron during ionic bonding to form +1 ions, and react vigorously when placed in water
What properties do all alkali metals share?
Alkaline Earth metal (group 2)
Which Chemical family is calcium (Ca) in?
Halogens
Which chemical family is Bromine (Br) in?
Transition metals
Which chemical family is Iron (Fe) in?
Aluminium. It is not an alkali metal; it is a post-transition metal.
Which element is not correctly matched to its periodic group? Antimony (Sb) - metalloid Krypton (Kr) - noble gas Aluminium (Al) - alkali metal Fluorine (F) - halogen
Carbon: 4 valance electrons
Which of the following CORRECTLY pairs the element with the number of valence electrons? Magnesium: 1 valence electron Carbon: 4 valence electrons Sulfur: 7 valence electrons Chlorine: 8 valence electrons
Aluminium: 3 valence electrons
Which of the following CORRECTLY pairs the element with the number of valence electrons? Sodium: 2 valence electrons Aluminium: 3 valence electrons Gallium: 4 valence electrons Bromine: 6 valence electrons
Barium (Ba)
Which of the following has 2 valence electrons? Potassium (K) Barium (Ba) Aluminum (Al) Germanium (Ge)
Cadmium (Cd)
Which of the following is NOT an alkali metal? lithium(Li), Rubidium(Rb), Cadmium(Cd), Cesium(Cs)
Tungsten (W)
Which of the following is a transition metal? Helium (He), Calcium (Ca), Iodine (I), Tungsten (W)
Al, Ga, In (all post-transition metals)
Which of the following trio of elements would have similar chemical properties (in the same chemical family) Na, Al, Si K, Sr, Ba Al, Ga, In Cr, Tc, Os
Flourine and Phosphorus
Which of two are nonmetals: Fluorine (F) Phosphorus (P) Tungsten (W) Silicon (Si) Flourine and Phosphorus
