The ________________ is an arrangement of elements in columns.
column
rows
periodic table
electron shell
Each column in the periodic table is called a ___________
period
row
group
cluster
Which group of the periodic table is composed of inert (not reactive) gases?
alkali metals
halogens
alkaline earth metals
noble gases
Elements which are shiny, conduct electricity and heat are called _______.
metals
metalloids
nonmetals
nonexistant
Which element is not a metal?
H
Al
Rb
Be
The elements along the staircase are called...
transition metals
Which is a halogen?
Helium
Oxygen
Chlorine
Neptune
Which is an alkali metal?
Magnesium
Sodium
Iron
Iodine
What do we call a horizontal row of elements in the periodic table?
matter
A vertical column in the periodic table contains elements that share similar properties? What are these columns called?
valence shells
As you move from left to right on the periodic table, specifically for the A Groups, the number of valence electrons.......
Increases
Decreases
Remains the same
increases then decreases
As you move down a group on the periodic table, the number of valence electrons....
increases then increases
Which of the following would be most similar to Phosphorus? (select all that apply)
Silicon
Antimony
Sulfur
Germanium
What are valence electrons?
Any of an atom's electrons
Electrons not attached to any atom
Electrons located on the first energy level
electrons located on the outer energy level
What period is Lead (Pb) in?
6
4
Metals
4A
What element type is silicon (Si) a part of?
Metal
Nonmetal
Metalloid
Halogens
What is group name of the most reactive metals?
Noble gases
Alkali metals
Alkaline earth metals
Why are halogens so reactive?
They want to get rid of their only valance electron
They are non reactive, they have a full shell
They only need one more electron
How many valence electrons does a carbon atom have?
8
2
Which element conducts electricity the best?
Silver
Fluorine
Arsenic
