atom and periodic table garrett mauck Flashcards
What is proton
A subatomic particle that has a postitve charge
What is nucleus
Atoms central region which is made of protons and neutrons
What is neutron
Subatomic particle that has no charge
What is electron
Subatomic particle that has a negitive charge
What is orbital
Skikda
What is valence electrons
A electron that is found by the outer shell of an atom. That determines that atoms chemical properties
Periodic law
That law that states the repeating chemical and physical properties of an elements change in periodically with atomic number of the elements
Period
Horizontal row of elements in the periodic table
What is group
Vertical columns of elements I. The periodic table
What is metal
A conductor that is typically hard and shinny and malt able.
Nonmeltal
An element that conducts heat or warmth and electricity poorly
Semiconductor
An compound or element that can conduct a electric current better than a insulator
Alkali metal
One of the elements of group 1 of the table
Alkaline earth metal
One of the elements in group 2 of the table
Transition metal
One of the element in group 3-12 of the table
Halogen
One element in group 17 of the table
Noble gas
A gas that is unreactive element in group 18 of the periodic table
Ion
An atom or group of atoms that has lost or gained one or more electrons and has a negative or positive charge
Atomic number
Number of protons in the nucleus of an atom
Mass number
The sum of the numbers of protons and neutrons in the nucleus of a atom
Isoptope
A atom that has the same number of protons as other atoms
Atomic mass
A unit of mass that describes the mass of an atom or molecule
Average atomic mass
The weighted average of the masses of all natuarally occurring isotopes of an atom
Mole
A si unit used to measure the amount of a substance whose number of particles is the same as the number of atoms in a carbon
