Vocabulary
The negatively charged particle that moves around the nucleus in an electron cloud.
What is an electron?
The scientist who proposed that all matter is made of atoms and that atoms of the same element are identical.
Who is John Dalton?
Chemist renowned as the "father of the periodic table," which he created in 1869
Who is Dmitri Mendeleev?
The region of space in an atom where an electron is most likely to be found.
What is an orbital?
A chemical bond formed when atoms transfer electrons from one atom to another.
What is an ionic bond?
A particle in the nucleus with no electrical charge.
What is a neutron?
The model that describes electrons moving in a cloud of probability around the nucleus.
What is the electron cloud model?
Elements that are shiny, good conductors, and usually solid at room temperature.
What are metals?
The four types of orbitals found in atoms.
What are s, p, d, and f orbitals?
A bond formed when atoms share electrons.
What is a covalent bond?
The number of protons in the nucleus of an atom that identifies the element.
What is the atomic number?
The scientist who discovered the electron and proposed the “plum pudding model.”
Who is J. J. Thomson?
The modern periodic table is arranged by increasing this property.
What is atomic number?
Elements in the same group tend to have the same number of these electrons.
What are valence electrons?
Atoms bond together mainly to achieve this
What is stability (a full valence shell, 8 valance electrons, octet rule)?
The electrons in the outermost energy level that determine how atoms react.
What are valence electrons?
The scientist who concluded that atoms are mostly empty space with a dense nucleus.
Who is Ernest Rutherford?
The vertical columns in the periodic table that contain elements with similar properties.
What are groups (or families)?
The abbreviated electron configuration of this element is [Ar]4s23d6
What is iron (Fe)?
The Lewis structure for ammonia (NH3) contains this number of lone pair(s) on the central nitrogen atom
What is 1?
Atoms of the same element that have different numbers of neutrons.
What are isotopes?
The scientist who proposed electrons move in specific energy levels around the nucleus.
Who is Niels Bohr?
Elements that have properties of both metals and nonmetals.
What are metalloids?
The number of core electrons of an element that has the electron configuration of 1s2 2s2 2p6
What is 2?
The Lewis structure for sulfur trioxide (SO3) contains this number of triple bonds around the central sulfur atom
What is 0?