Atomic structure
This subatomic particle carries a negative charge and is found orbiting the nuclues.
What is an electron?
An atom that has gained or lost electrons and now carries a charge is called this
What is an Ion
This type of radiation consists if high-speed electrons ejected from the nucleus
What is beta decay/particle?
This term describes the amount of time it takes half of the radioactice chemical to decay
What is half-life?
This is the smallest unit of an element that still maintains its properties
What is an atom?
The mass number of an atom is the sum of these two particles
What are protons and neutrons?
A postively charged ion is known by this name
What is a cation?
This type of radiation is actually a wave of electromagnetic energy and has no mass
What is gamma radiation?
If a sample has a half-life of 10 years, how much of a 100g sample will remain after 20 years
What is 25 grams?
This is the name of the table that lists all known elements
What is a periodic table?
The specific number of protons determines the identity of an element element on the periodic table
What is an atomic number?
These are horizontal rows on the periodic table
What are periods?
This type of decay involves the ejection of the helium nucleus
what is alpha decay/particle?
This is the process used to determine the age of ancient oragnic matierls like bone or wood
What is carbon dating?
This is the term for a scientist who studies property and matter
What is a chemist
These atoms are the same element that have the same number of protons but a different number of neutrons
What are isotopes?
These are the vertical columns on the periodic table, usually containing elements with similar chemical properties
What are groups or families?
This is the term for the process where an unstable nucleus loses energy by emitting radiation
What is is radioactive decay?
This type of decay involves the nucleus emitting a particle to reach a more stable state
What is spontaneous decay?
This is a piece of equipment used to hold and heat small amount of chemicals
What is a test tube?
This region of the atom contains nearly all of its mass but occupies very little space
What is the nucleus?
The highest penetrating power and is the hardest to stop
What is gamma radiation?
If an aplha particle is emmited, the atomic number of the element will decrease by this amount
What is 2?