Equals the sum of protons and neutrons in an atom

Atomic # of protons and electrons

Always 8 eb in the outter shell

Where valence electrons are shared

Valence electrons are transferred and since atoms lose electrons, they become ionized

The emission of particles and energy in order to become stable

An electron in the nucleus is ejected and leaves the atom. A neutron converts to a proton.

More invasive, the alpha particle consists of 2 neutrons bound together.

Radioactive half life-

The time required for the quantity of radioactivity to be reduced by half of the original.

What are the 2 types of ionizing radiation?

Particulate and Electromagnetic

Atoms that have the same Z number but different atomic numbers. Meaning they have the same number of protons but different number of neutrons.

Atoms that have a different number of protons and a different number of neutrons but same number of nucleons.

Atoms that have the same number of neutrons but different number of protons.

Atoms that have the same Z number and the same atomic mass number but exist at different energy states due to nucleon arrangement.

Where are gamma rays emitted from? and what are they usually associated with?

Nucleus of a radioisotope and usually associated with alpha and beta emission.

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Structure of Matter

Physics Chapter 2

Question	Answer
Atomic Mass-	Equals the sum of protons and neutrons in an atom
Z#-	Atomic # of protons and electrons
Octet Rule-	Always 8 eb in the outter shell
What charge is the nucleus?	Positive
What charge is the electrons?	Negative
What charge is the neutron?	Neutral
What charge is the protons?	Positive
What is eB measured in?	KeV
T or F; If an atom gains or loses an electron it will become ionized?	True
What charge is a Anion?	Negative
What charge is a Cation?	Positive
Covalent Bonds-	Where valence electrons are shared
Ionic Bonbs-	Valence electrons are transferred and since atoms lose electrons, they become ionized
Radioactivity-	The emission of particles and energy in order to become stable
Beta emission-	An electron in the nucleus is ejected and leaves the atom. A neutron converts to a proton.
Alpha emission-	More invasive, the alpha particle consists of 2 neutrons bound together.
Radioactive half life-	The time required for the quantity of radioactivity to be reduced by half of the original.
What are the 2 types of ionizing radiation?	Particulate and Electromagnetic
What are the 2 types of Particulate radiation?	Alpha & Beta
What is a photon?	X-ray
What are x-rays and gamma rays a form of?	Electromagnetic radiation
Isotope-	Atoms that have the same Z number but different atomic numbers. Meaning they have the same number of protons but different number of neutrons.
Isobar-	Atoms that have a different number of protons and a different number of neutrons but same number of nucleons.
Isotone-	Atoms that have the same number of neutrons but different number of protons.
Isomer-	Atoms that have the same Z number and the same atomic mass number but exist at different energy states due to nucleon arrangement.
Out of Alpha, Beta, and regular photons which one is least ionizing?	Photons (X-rays)
AMU-	Atomic Mass Units
What is the amount of AMU of a alpha particle?	4 AMU
How fast does Electromagnetic radiation(EM) travel?	3 x 10^8 m/s
Where are gamma rays emitted from? and what are they usually associated with?	Nucleus of a radioisotope and usually associated with alpha and beta emission.
Atomic # - Z# =	# of neutrons

Created by: J_Proctor

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