elements olexes Flashcards
Proton
Positive charge moves around the nucleus
Nucleus
Center of an atom where protons And neutrons are. Brain of n atom
Neutron
Negative charged moves around the nucleus
Orbital
Readings in an atom where electrons are likely to be found
Valence electron
An electron in the outermost energy level of an atom.
Periodic law
States that she. Elements are arranged this way similarities in their properties will occur in a regular pattern
Periods
Horrozontal rows on the periodic table
Group
A column that has the same number of valence electrons
Metal
A group of element that conducts heat very well makes up most of the periodic table
Non metal
Conducts heat and electricity poorly
Semiconductor
Group on the periodic table that conducts electricity but does not insulate well
Alkali metals
First group of periodic table
Alkaline earth metals
Groupn3
Transition metals
Metals in between the noble gases and the Ålkane metals
Halogens
Most reactive nonmetal a
Noble gases
18 th group of elements
Ion
Different kind of element
Atomic number
Number of protons and electrons in an elements
Mass number
Number that how much an elements weighs
Isotope
Element with one or less electrons
Atomic mass
One isotope total amount of mass
Average atomic mass
Average atomic mass
What is a mole
A way to count something very small or large
What is avagrodro
An equation that tells how many atoms are in carbon 12
What is molar mass
Amount of atoms in an object
Conversion factor
A set amount you have to convert
Isotopes
The indicator the clones another molecule
