Atomic Structure
The number of protons in an atom is called this.
atomic number
Elements in Group 1 are known as this family.
Alkali metals
This particle has a positive charge.
Proton
Elements in Group 1 react strongly with this substance.
Water
This element is found in table salt
Sodium
Protons and neutrons are found in this part of the atom.
Nucleus
Group 17 elements are called this.
Halogen
This particle has no charge.
Neutron
When atoms share electrons, this type of bond forms.
Covalent bond
This element is used in wooden pencils
Carbon
The negatively charged particles in an atom.
Electrons
Group 18 elements that are very unreactive.
Noble gases
This particle moves around the nucleus.
Electron
When electrons are transferred from one atom to another, this bond forms.
This element is the main gas in Earth’s atmosphere.
Nitrogen
The number of electrons in the outer shell of an atom.
Valence electrons
Elements in the middle of the table are called these.
Transition metals
The number of protons and neutrons added together.
Mass number
This determines how reactive an element is based on its outer shell.
Valence electrons
This metal is magnetic and used to make steel.
Iron
The average mass of an element shown on the periodic table.
Atomic mass
Elements that share similar properties because they are in the same vertical column are in the same what?
family
Atoms of the same element with different numbers of neutrons.
Isotopes
Noble gases are not very reactive because their outer shell is what.
Full
This element is needed for strong bones and teeth and is in milk.
Calcium