Section 5.1
Lab 5A
Section 5.2
Lab 5B
Lab 5C & NASA Video
100
This occurs when the nucleus of an atom spontaneously changes and energy is released.
What is Radioactivity?
100
This number tells us what kind of element an atom is.
What is the atomic number?
100
There can be a maximum of __ electrons in the second energy level.
What is 8?
100
The smallest quantity of light possible is called this.
What is a photon?
100
This refers to the time it takes for electromagnetic radiation to travel through a vacuum.
What is the speed of light?
200
The mass of one carbon atom is 12.011 of what?
What is atomic mass units (AMUs)?
200
This is an atom (or small molecule) that has an unequal number of protons and electrons.
What is an ion?
200
This tells us how often a wave moves up and down per unit time.
What is the frequency?
200
This spans from about 400 nm to 750 nm.
What is the spectrum of visible light?
200
This is a very small unit of energy that can be used to describe light energy.
What is an electron volt?
300
Most of the mass of an atom is located here.
What is the nucleus?
300
An atom may have more than one of these if it can have different numbers of neutrons.
What is an isotope?
300
Chemists use this to describe phenomena that occur at subatomic scales.
What is quantum theory?
300
The ___________ of an atom describes how the electrons are organized among the orbitals.
What is electron configuration?
300
Using this tool, astronomers can determine the composition of distant stars.
What is spectroscopy?
400
In an atomic model, this is the imaginary path an electron travels around the nucleus.
What is an orbit?
400
This is what describes the number of protons and neutrons in an atom's nucleus.
What is the mass number?
400
This size of wavelength indicates a higher energy wave.
What is a short wavelength?
400
Light measurements can be done using this.
What is a spectrophotometer?
400
This is the number on the periodic table that tells you which kind of element an atom is.
What is the atomic number?
500
During this, an element spontaneously changes into a new element.
What is decay?
500
Which subatomic particle has almost no mass relative to the others?
What is the electron?
500
This describes where you are likely to find an electron.
What is an orbital of an atom?
500
This includes low energy radio waves, as well as high energy gamma rays.
What is the electromagnetic spectrum?
500
Which type of electromagnetic radiation carries more energy per photon, microwaves or visible light?
What is visible light?
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