Elements
Which group is most reactive?
Alkali metals
Where are metals found on the table
Metals are located on the left and center of the table
What is the approximate atomic mass of Hydrogen
1
Whats the difference
A group is a column (vertical) indicating similar properties; a period is a row (horizontal)
(True or false) The original periodic table was when we were introduced to all the elements we know today.
False. The first periodic table had gaps for undiscovered elements
Why do elements in the same group have similar properties?
Because they have the same number of valence electrons
What are the "blocks" of the periodic table?
s, p, d, and f blocks
This is the lightest element
Hydrogen
How many periods are on the periodic table
7
How was the periodic table originally organized?
By atomic weight
What are elements on the zig-zag line called?
Metalloids
What happens to the atomic number as you move from left to right across a period?
The atomic number increases by one for each element.
Which element has the largest mass
Oganesson also know as Og (118)
How many groups are on the periodic table
18
Who "invented" the periodic table
Dmitri Mendeleev
Which metal is liquid at room temperature?
Mercury.
What are the elements in Groups 3 through 12 called
Transition metals
This element, used in specialized aerospace materials and has an atomic mass of roughly 9.01
Beryllium
how does atomic radius increase and decrease
increases as you go down a group and decreases as you go up.
Who made the new version of the periodic table?
Henry Moseley
What element is found in diamonds and all living organisms?
Carbon
What are the specific names for some of the common groups? (name all, theres 4)
Group 1: Alkali Metals
Group 2: Alkaline (or earth metals)
Group 17: Halogens
Group 18: Noble Gases
This non-metal, crucial for life, has an atomic mass of 12.011
Carbon
What number tells you how many valence electrons there are
The group number
When was the first periodic table made?
1869