EXAM 3 SCMH 1010 ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
There is energy associated with electron shells. This energy is exploited in chemical reactions- some
reactions release energy, some store it. There is energy associated with the arrangement of protons and
neutrons. - (ANSWER)Atomic energy
"c" is very large, therefore a little bit of mass can become an enormous amount of energy. Energies
associated with nucleus is stronger than those associated with electrons. Shows mass can be converted
to energy. Describes why nuclear reactions produce so much energy. - (ANSWER)E=mc^2
Protons - (ANSWER)All positively charged. They do not want to be near eachother.
It indicates that some force that is stronger than the Coulomb force acts in the nucleus - (ANSWER)What
does protons being bound together indicate?
Stronger than the Coulomb force in the nucleus. It must act over very small distances. Acts between
protons and neutrons so it can't be electrical in nature. It is associated with some form of energy. Alpha
decay occurs when Coulomb repulsion overcomes the strong force attraction. - (ANSWER)The strong
force
Stable - (ANSWER)Applies to most elements on the periodic table. If left alone, they will stay in their
current form (won't turn into anything else).
Exhibit radioactivity. Larger atoms have less of an effect from the strong force and have more protons
than neutrons. More neutrons to help overcome the Coulomb repulsion. Larger atoms are less stable. -
(ANSWER)Unstable
Radioactivity - (ANSWER)Property of some elements that indicates that they will decay into other
elements. Decay process proceeds in several ways. Results in emission of light when transitioning, but
we often cannot see it.
Alpha decay, Beta decay, Gamma radiation - (ANSWER)What are the types of radioactive decay?
, EXAM 3 SCMH 1010 ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
Alpha decay (α-decay) - (ANSWER)An alpha particle is a particle consisting of 2 protons and 2 neutrons.
Referred to as a helium nucleus. Results in an element losing 2 protons. That is, it turns into another
element. Nucleus undergoing decay ejects an He nucleus.
Beta decay (β-decay) - (ANSWER)Occurs when a neutron in the nucleus turns into a proton by emitting
an electron and another particle called a neutrino. Results in an element gaining 1 proton (atomic
number increases by 1). It turns into a different element.
Gamma radiation (γ-radiation) - (ANSWER)Different from other types of decay in that it's not a particle,
but a photon (a particle of light). A proton or neutron in an excited state falls back down to its ground
state. Does NOT produce a new element. Produces high-energy radiation (ex. gamma rays).
Half-life - (ANSWER)The amount of time, on average, it takes half of a sample of some radioactive
elements to decay into other elements. Leads to radiometric dating.
Radiometric dating - (ANSWER)Knowledge of an element's half-life together with an educated
assumption about how much of that element originally resided in an object leads to the ability to
determine how old that object is.
Nuclear energy - (ANSWER)The process of radioactive decay releases energy that originally was used to
bind particles in the nucleus. Two types: fusion and fission. Both of these produce energy that can
produce electricity.
Fission - (ANSWER)The process by which one element splits to become 2 others. Creates energy that can
produce electricity.
Fusion - (ANSWER)The process by which two elements combine to become a third element. Creates
energy that can produce electricity.
1. Began as a large, diffused cloud
2. Collapsed under the influence of its own gravity
3. Conservation of angular momentum
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
There is energy associated with electron shells. This energy is exploited in chemical reactions- some
reactions release energy, some store it. There is energy associated with the arrangement of protons and
neutrons. - (ANSWER)Atomic energy
"c" is very large, therefore a little bit of mass can become an enormous amount of energy. Energies
associated with nucleus is stronger than those associated with electrons. Shows mass can be converted
to energy. Describes why nuclear reactions produce so much energy. - (ANSWER)E=mc^2
Protons - (ANSWER)All positively charged. They do not want to be near eachother.
It indicates that some force that is stronger than the Coulomb force acts in the nucleus - (ANSWER)What
does protons being bound together indicate?
Stronger than the Coulomb force in the nucleus. It must act over very small distances. Acts between
protons and neutrons so it can't be electrical in nature. It is associated with some form of energy. Alpha
decay occurs when Coulomb repulsion overcomes the strong force attraction. - (ANSWER)The strong
force
Stable - (ANSWER)Applies to most elements on the periodic table. If left alone, they will stay in their
current form (won't turn into anything else).
Exhibit radioactivity. Larger atoms have less of an effect from the strong force and have more protons
than neutrons. More neutrons to help overcome the Coulomb repulsion. Larger atoms are less stable. -
(ANSWER)Unstable
Radioactivity - (ANSWER)Property of some elements that indicates that they will decay into other
elements. Decay process proceeds in several ways. Results in emission of light when transitioning, but
we often cannot see it.
Alpha decay, Beta decay, Gamma radiation - (ANSWER)What are the types of radioactive decay?
, EXAM 3 SCMH 1010 ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
Alpha decay (α-decay) - (ANSWER)An alpha particle is a particle consisting of 2 protons and 2 neutrons.
Referred to as a helium nucleus. Results in an element losing 2 protons. That is, it turns into another
element. Nucleus undergoing decay ejects an He nucleus.
Beta decay (β-decay) - (ANSWER)Occurs when a neutron in the nucleus turns into a proton by emitting
an electron and another particle called a neutrino. Results in an element gaining 1 proton (atomic
number increases by 1). It turns into a different element.
Gamma radiation (γ-radiation) - (ANSWER)Different from other types of decay in that it's not a particle,
but a photon (a particle of light). A proton or neutron in an excited state falls back down to its ground
state. Does NOT produce a new element. Produces high-energy radiation (ex. gamma rays).
Half-life - (ANSWER)The amount of time, on average, it takes half of a sample of some radioactive
elements to decay into other elements. Leads to radiometric dating.
Radiometric dating - (ANSWER)Knowledge of an element's half-life together with an educated
assumption about how much of that element originally resided in an object leads to the ability to
determine how old that object is.
Nuclear energy - (ANSWER)The process of radioactive decay releases energy that originally was used to
bind particles in the nucleus. Two types: fusion and fission. Both of these produce energy that can
produce electricity.
Fission - (ANSWER)The process by which one element splits to become 2 others. Creates energy that can
produce electricity.
Fusion - (ANSWER)The process by which two elements combine to become a third element. Creates
energy that can produce electricity.
1. Began as a large, diffused cloud
2. Collapsed under the influence of its own gravity
3. Conservation of angular momentum
