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Models of the Atom
Atomic Theory
Scientific Method
States of Matter
Phase changes
100
In the Gold-Foil Experiment, Rutherford discovered this dense center of the atom
What is the nucleus
100
Democritus is credited with being the first person to name this tiny particle
What is the atom
100
This educated guess towards an experiment must be testable and falsifiable
What is an hypothesis
100
This state of matter has a defined shape and a defined volume
What is a solid
100
This is the process of a solid turning into a liquid
What is melting
200
In Thomson's plum pudding model there is a large positive charge with these small negative charges
What is electrons
200
This is the experiment done by Thomson, that showed that electrons existed for the first time
What is the cathode ray experiment
200
This is the variable that is affected after we manipulate one of the variables
What is the dependent variable
200
At the atomic level this state of matter has atoms that are not attached and roam freely
What is a gas
200
This is the specific temperature and pressure, where a solid, liquid, and a gas can exist.
What is the triple point
300
In the quantum mechanical model, electrons fit these two descriptions
What is a particle and a wave
300
His gold foil experiment disproved Thomson's plum pudding model
Who is Rutherford
300
We compare our results to this group when we are analyzing our data
What is a control group
300
These two states of matter have a defined volume
What is a liquid and a gas
300
This process is the change of a gas to a liquid
What is condensation or condensing
400
He is credited with first describing atoms as spheres.
Who is Dalton
400
This experiment showed the dual nature of electrons and later contributed to the quantum mechanical model
What is the double slit experiment
400
When analyzing our data, we must make a conclusion on whether or not this is false or true
What is our hypothesis.
400
This is required to change matter into its different states
What is energy
400
Past a certain point of high temperatures and pressures a liquid or gas will turn into this
What is a supercritical fluid
500
In Bohr's planetary model of the atom electrons can jump between these
What are energy levels
500
His work with quantum mechanics first described electrons as electron clouds that describe the electrons probable location
Who is Schrodinger
500
This experiment describes how something like an animal can be thought of as being dead and alive at the same time
What is Schrodinger's cat experiment
500
This 4th state of matter is a collection of ions (charged substances) in a gas
What is a plasma
500
This is the process of a gas becoming a solid
What is deposition