Definitions
Structure of Atoms
Periodic Table
Subatomic Particles
Past Test Review
100
The smallest units of matter that maintain elemental properties.
What are atoms?
100
This is the area where neutrons are found.
What is the nucleus?
100
This is the element that has an atomic number of 21.
What is Scandium?
100
These particles carry a negative electrical charge.
What is electrons?
100
This law tells us that with every action there is an equal and opposite reaction. 
What is Newton's 3rd Law?
200
Substance made up of one or more of the same type of atom.
What is an element?
200
This is the area where electrons are found.
What is the electron shells / electron cloud?
200
An atom of Aluminum has 13 protons and 14 neutrons. This is its atomic mass.
What is 26.982?
200
These particles carry no charge and help maintain the strong force to hold the nucleus together?
What is neutrons?
200
This is the push or pull exerted onto an object. 
What is force?
300
Different particles that work together to make up an atom.
What is subatomic particles?
300
This the area where protons are found.
What is the nucleus?
300
This element has 47 electrons.
What is Silver (Ag)?
300
These particles carry a positive charge and help maintain the strong force to hold the nucleus together?
What is protons?
300
This is the combination of total forces working with or against each other on an object. 
What is net force?
400
An atom with a net electrical charge.
What is ion?
400
These two electrically charged particles can be found in different locations in an atom.
What are protons and electrons?
400
An element has 48 neutrons and 37 electrons. This is its mass number.
What is 85?
400
These particles are found on the valence shell.
What is (valence) electrons?
400
This is the rate of change of velocity an object undergoes.
What is acceleration?
500
This is an ion with a negative net electrical charge.
What is an anion?
500
The atom is made up of subatomic particles, but other than those it is mostly this.
What is empty space?
500
An element with a mass number of 204 and an atomic number of 82 has this many neutrons.
What is 122?
500
These particles determine what element an atom is.
What is protons?
500
This is the light wave with the shortest wavelength and highest frequency on the electromagnetic spectrum.
What is gamma rays?