Periodic Table Basics
What are the rows of the periodic table called?
What do elements in the same group have the same number of?
valence electrons
How many periods are in the periodic table?
7
True or false: The periodic table is arranged based on the atomic mass.
False
What is the atomic number?
the amount of protons and electrons
What are the columns on the periodic table called?
Groups
What is the name of the first group on the periodic table?
alkali metals
How many electron shells are in period 2?
2
True or false: Each period has the same number of valence electrons.
False
How do you calculate neutrons?
atomic mass - atomic number
Elements in the same group share the same what?
chemical and physical properties
Why do elements in the same group have similar chemical and physical properties?
the elements have the same number of valence electrons which determines the chemical and physical properties of an element
What example was used to represent the trend of electron shells moving down the periods?
clothing layers
What is ionization energy?
The amount of energy required to remove or add an electron from an atom.
What two subatomic particles make up the nucleus of an atom?
proton and neutron
An elements position in the periodic table is determined by its what?
atomic number
What happens to the number of electron shells as you move down a group?
The number of electron shells increases
What is the third element in the second row of the periodic table?
B - Boron
What happens to ionization levels across the periodic table?
They increase from left to right.
What is atomic radii?
the distance from the outer electron shell of an atom to its nucleus
metals, non-metals, metalloids
What is another name for groups?
Hint: it is not columns
family
What happens to the number of electron shells as you move across a period?
The number of electron shells stays the same across a period.
What happens to the atomic radii across the periodic table?
It increases from right to left, as well as moving downwards.
Daily Double: How many valence electrons does oxygen have?
8