Protons and neutrons are made from which of the following particles?
up quarks only
down quarks only
up quarks and down quarks
hadrons
2. Which of the following is the measure of radioactive decay rate?
alpha emission
half-life
beta emission
gamma emission
3. Which of the following radioisotopes is naturally occurring?
94^238Pu
1^3H
103^258Lr
96^242Cm
4. When the amount of a radioactive substance is reduced by half, what has occurred?
alpha radiation
beta radiation
a half-life
gamma radiation
5. Which of the following distinguishes a nuclear reaction from a chemical reaction?
It involves atoms.
There is an exchange of electrons.
There is a change in the nucleus.
Mass is conserved.
up quarks only
down quarks only
up quarks and down quarks
hadrons
2. Which of the following is the measure of radioactive decay rate?
alpha emission
half-life
beta emission
gamma emission
3. Which of the following radioisotopes is naturally occurring?
94^238Pu
1^3H
103^258Lr
96^242Cm
4. When the amount of a radioactive substance is reduced by half, what has occurred?
alpha radiation
beta radiation
a half-life
gamma radiation
5. Which of the following distinguishes a nuclear reaction from a chemical reaction?
It involves atoms.
There is an exchange of electrons.
There is a change in the nucleus.
Mass is conserved.
-
Hey there, This is more physics but who cares :),
1: Up down quarks.
2: Half life
3:To be honest none of them are but 1^3H
4: A half Life
5:There is a change in the nucleus.
1: Up down quarks.
2: Half life
3:To be honest none of them are but 1^3H
4: A half Life
5:There is a change in the nucleus.
-
1. up quarks and down quarks
2. half-life
3. 1^3H
4. a half-life
5. There is a change in the nucleus.
2. half-life
3. 1^3H
4. a half-life
5. There is a change in the nucleus.