Periodic Table
More Periodic Table
Atom facts
Masses of Atoms
Structure of the Atom
100
a horizontal row of elements on the periodic table
What is a period
100
The periodic table is organized using this
Is it atomic number
100
The overall charge of an atom is
Is it neutral
100
the smallest piece of matter that still has the properties of the element
What is an atom
100
particle with an electrical charge of 1-
What is an electron
200
a vertical column of elements on the periodic table
What is a group
200
Periods tell us how many ____ an atom has
Is it energy levels
200
True or False: Electrons close to the nucleus have higher energy than electrons far from the nucleus
Is it false
200
a number equal to the number of protons in an atom
What is atomic number
200
particle with no charge
What is a neutron
300
Na on the periodic table
What is Sodium
300
Groups tell us how many ____ an atom has
Is it valence electrons
300
Smaller particles that protons and neutrons are made of
Are the quarks
300
the sum of the number of protons and the number of neutrons in an atom
What is atomic mass
300
the small, positively charged center of the atom
What is the nucleus
400
the symbol of an element with dots representing the number of electrons in the outer energy level
What is an electron dot diagram
400
atomic number is equal to the number of
Is it protons
400
Phosphorous has ____ valence electrons, so it's in group
Is it 5 and group 15
400
atoms of the same element that have different numbers of neutrons
What is isotopes
400
particle with an electrical charge of 1+
What is a proton
500
Element that has 4 valence electrons and 4 energy levels
Is it Germanium
500
Hydrogen and _____ have the same number of energy levels
Is it helium
500
Created the periodic table of elements
Who is Dmitri Mendeleev
500
2210Ne has how many neutrons
Is it 12 neutrons
500
the area around the nucleus of an atom where its electrons are most likely found
What is an electron cloud