) In a nuclear reaction, which quantity is the same before and after the change? (1 point) the number of alpha particles
the types of atoms
the total mass
the total number of protons
A) Why does the emission of an alpha particle always result in transmutation? (1 point)
The atom is converted to helium.
The number of protons in the atom changes.
The protons in the large atom change to neutrons.
Energy is released from the nucleus of the atom.
A) Which phrase describes radioactive decay? (1 point)
the triggering of one reaction by the products of another
the spontaneous emission of radiation
the splitting of a large nucleus into smaller nuclei
the joining of small nuclei into a larger nucleus
Question 4
Question 5
Question 6
A) Which option would be an appropriate model of nuclear fusion? (1 point)
sewing one piece of fabric to another
putting a puzzle together
mashing two marshmallows together
adding a drop of water to a glass of water
A) Which aspect must be taken into consideration when creating a model of radioactive decay?
(1 point)
There must not be any changes to the element in question.
There must be a way for unstable nuclei to become stable nuclei.
There must be a predictable and reversible change that occurs.
There must not be any particles or energy emitted from the nucleus.
A) How is fusion different from a simple chemical reaction? (1 point)
Energy is released in a fusion reaction, but it is absorbed in a chemical reaction.
The nuclei combine in a fusion reaction.
Atoms come together in a chemical reaction, but they are split in a fusion reaction.
The atoms are bound to each other by electrons in a fusion reaction.
Question 7
A)
Use the image to answer the question.
Which statement best describes the charged particles in the fusion reaction?
(1 point)
The nucleus with the greatest positive charge is on the left side of the reaction.
The nucleus with the greatest positive charge is on the right side of the reaction.
There are no charged particles because the positive and negative charges will cancel out.
There are no charged particles because these are all nuclei, which are neutral