Atoms and The Periodic Table Flashcards
What is an atom?
An atom is the smallest unit in which matter can be divided without the release of electrically charged particles.
what are electrons?
Negatively charged subatomic particles that are found in the shell of an atom.
What is the electron configuration?
2, 8, 8
What is a positively charged ion?
Cation
What is a negatively charged ion?
Anion
What is the Periodic table?
A scientific table that shows all elements that are currently known and unknown.
what is an ion?
An ion is a charged atom based on the number of electrons that are in the atom.
What is ionic bonding?
Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions.
What are Isotopes?
An isotope is an atom the has a varied amount of neutrons.
What is radioactive decay?
The process by which an unstable atomic nucleus loses energy through radiation.
What are half-lives?
What does the term describe?
Time required for a quantity to reduce to half of its initial value.
How quickly unstable atoms radioactively decay or how long stable atoms survive.
Define “Reactivity”
when a chemical substance undergoes a chemical reaction, either by itself or with other materials, releasing energy.
