Parts of an Atom
Atomic theory
Nuclear Chemistry
Half Lifes & Nuclear Equations
Random
100
This particle is located in the nucleus of an atom and has a mass of 1 amu, and a charge of +1.
What is a proton?
100
What charge is a proton?
Positive
100
distinguish between a nuclear reaction and a chemical reaction
Chemical reaction normally occurs outside the nucleus. Nuclear reaction happens only inside the nucleus. or ____________
100
Define half life
the amount of time it takes HALF of a substance to decay into a set of more stable atoms.
100
What is an isotope?
Atoms of the SAME element but with different masses
200
Atoms contain __________ subatomic particles
a) 1
b) 2
c) 3
3
200
What charge is a electron?
Negative
200
What are the three types of radiation that can be emitted during a nuclear reaction?
alpha
beta
gamma
200
What must be true when writing a balanced nuclear equation?
mass and atomic numbers are conserved
200
Calcium
300
This particle is found flying around the nucleus in orbitals.
What is an electron?
300
What charge is an Neutron
Neutral
300
identify the type of reaction shown above.
fusion
300
Determine the missing particle:
22288Ra --> _____ + 42He
21886Rn
300
Nitrogen
400
These particles have NO charge but have a mass of 1 amu.
neutron
400
Does an electron in an atom move at all?
Yes-Electrons move quickly
400
Determine the type of radioactive decay occuring below
Alpha decay
400
Determine the missing particle
189O --> 189F + ____
beta particle
400
Which particle determines the identity of an element?
protons
500
Which particle does NOT change the identity of an element, only its mass?
neutron
500
What are the three basic particles of an atom?
Protons, electrons, and neutrons
500
Why do atoms undergo radioactive decay?
large ratio of neutrons to protons
to gain stability
500
What is the half-life of a substance if, after 60 days, a sample of 40 grams decays into 2.5 grams
15 days
500
The atom is held together by _____ –
mainly the electromagnetic force and the
strong nuclear force.
Forces