Physical Science ch 10 (Nuclear Physics)

question

Protons
answer

Each element has a definite number of_________
question

Atomic number
answer

Number of protons equals________
question

Isotope
answer

Element with a different number of neutron__________
question

Protons and neutrons
answer

Adding _______ and __________ equals the atomic mass
question

Nucleons
answer

Protons and neutrons are both called_________
question

The proton number determines the element
answer

Why cant the proton amount be changed in an element?
question

Ions
answer

_______ are created when the number of electrons vary
question

Strong nuclear force
answer

Force that holds protons and neutrons together
question

Decrease or increase of electrons respectively
answer

How are positive and negative ions made?
question

Nucleus- each particle in it is about 2000 times more massive than an electron
answer

Which part of the atom makes up the most mass? Why?
question

The protons and neutrons are about 2000 times more massive than them
answer

Why is the electron’s mass not counted when counted the atomic mass?
question

J J Thomson
answer

Who discovered the electron?
question

Earnest Rutherford
answer

Who discovered the proton/nucleus?
question

James Chadwick
answer

Who discovered the neutron?
question

Mass number
answer

mass of a specific isotope
question

Atomic mass
answer

Average of all isotope atomic masses
question

Radioactive decay
answer

What happens during a half-life?
question

Nuclear fission
answer

process in which a large nuclei “splits” into two intermediate-size nuclei
question

Nuclear fussion
answer

process in which smaller nuclei combine to form larger nuclei
question

Parent nucleus’s bonds weaken and some nucleons split off, creating a “daughter” nucleus. During a half-life
answer

Describe process of a parent nucleus decaying into daughter material
question

Geiger counter
answer

device used to detect radiation (click click)
question

83
answer

After what atomic number does the nucleus become unstable

Get instant access to
all materials

Become a Member