Atoms
Define an atom
What is: the smallest unit of an element
A neutron
What is a neutrally charged subatomic particle
Mg symbolizes what element.
Magnesium
The scientist who created the periodic table
Dmitri Mendeleev
Electrons are located here
Outside of the nucleus, in the electron cloud
In an atom, which of the following has the least mass:
neutron, electron, or proton
What is electron
Average mass of all the protons and neutrons in the atom
What is atomic mass
The symbol for the element of Phosphorus.
What is P
Name the element with 13 protons, 14 neutrons, and 13 electrons
Oxygen
The compound Mg(NO3)2 contains what atoms
What is Magnesium, Nitrogen, Oxygen
These two particles are located in the atom's nucleus
What is protons and neutrons
Subatomic particles with a negative charge
What is electron
On the periodic table, the number on the top of the element is the _____
What is the atomic number
"Boron the moron is on the top of the stupid stairs" represents the __________ on the periodic table.
Metalloids
These subatomic particles contributes most to an atom's overall mass.
What are protons and neutrons.
Atoms are made up of smaller subatomic particles called ____, _______, and ________
What is protons, neutrons, and electrons
Subatomic particles with a positive charge that is located in the nucleus of an atom.
What is a proton
On the periodic table, the number below the element is the _____
What is the atomic mass
The left side of the periodic table contains atoms that are all _____________.
Metals
A row in the periodic table is also called a ___________
Period
Describe the difference between atomic number and mass number
The atomic number is the number of protons in an atom. The Atomic Mass number is the sum of the number of protons and neutrons in an atom.
______ ______ represents the number of protons in an element of an atom
What is atomic number
This is the smallest atomic mass on the periodic table
What is Hydrogen
nonmetals
The electrons on the outermost shell of the atom are called ___________ electrons.
Valence