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Nuclear Forces

cava chem 303 s2d76 8.01 Nuclear Forces

QuestionAnswer
Most chemical reactions that you have studied deal with the exchange or sharing of [...] Most chemical reactions that you have studied deal with the exchange or sharing of valence electrons
nuclear chemistry deals with changes within the [...] of an atom nuclear chemistry deals with changes within the nucleus of an atom
Nuclear reactions can actually change an atom of one element into [...]. Nuclear reactions can actually change an atom of one element into an atom of another.
The plural of nucleus is [...] The plural of nucleus is nuclei
Nucleus comes from the latin word for '[...]' Nucleus comes from the latin word for 'nut'
The nuclei of some atoms undergo spontaneous changes that release radiation; this is called [...]. The nuclei of some atoms undergo spontaneous changes that release radiation; this is called radioactivity.
There are several forms of radiation, but they all involve either [...] , or [...] radiating out of something. There are several forms of radiation, but they all involve either particles, or waves radiating out of something.
To 'radiate' means to travel out in [...]. To 'radiate' means to travel out in all directions.
In 1903 Marie Curie won the Nobel Prize in physics for her work with [...]. In 1903 Marie Curie won the Nobel Prize in physics for her work with radioactivity.
Isotopes are different versions of an element with different neutron [...]. Isotopes are different versions of an element with different neutron numbers.
Some isotopes are radioactive and are called [-isotopes]. Some isotopes are radioactive and are called radioisotopes.
When we write the symbol for an isotope we sometimes do it with two numbers to the left of the symbol; one for the [...] number and one for the atomic number. When we write the symbol for an isotope we sometimes do it with two numbers to the left of the symbol; one for the atomic mass number and one for the atomic number.
The atomic number is the number of [-s]. The atomic number is the number of protons.
The atomic mass number is the number of [...] The atomic mass number is the number of protons + the number of neutrons
The atomic mass number is always [-er] than the atomic number (except for hydrogen where it's sometimes the same) The atomic mass number is always bigger than the atomic number (except for hydrogen where it's sometimes the same)
When two numbers are written to the left of the symbol of an atom, the bigger one (atomic mass number) goes on [top/bottom]. When two numbers are written to the left of the symbol of an atom, the bigger one (atomic mass number) goes on top.
You can remember that the [...] number goes on top by thinking of isotopes as 'top-heavy'. You can remember that the atomic mass number goes on top by thinking of isotopes as 'top-heavy'.
Decay means '[...]' Decay means 'breaking down'
In radioactive [...], the nucleus of an atom breaks down into a smaller nucleus and radiates particles or waves at the same time. In radioactive decay, the nucleus of an atom breaks down into a smaller nucleus and radiates particles or waves at the same time.
The nucleus of the atom is made up of [-s] and [-s]. The nucleus of the atom is made up of protons and neutrons.
the positive charges of protons [...] each other, so some *stronger* force must hold the nucleus together. the positive charges of protons repel each other, so some *stronger* force must hold the nucleus together.
protons and neutrons are collectively called [-s], which basically means 'nucleus particle' protons and neutrons are collectively called nucleons, which basically means 'nucleus particle'
protons and neutrons are made of smaller particles called '[-s]' protons and neutrons are made of smaller particles called 'quarks'
The attraction between the [-s] of protons and neutrons is what holds the nucleus together; this is known as the strong force. The attraction between the quarks of protons and neutrons is what holds the nucleus together; this is known as the strong force.
*up* quarks have a charge of [...] *up* quarks have a charge of +2/3
*down* quarks have a charge of [...] *down* quarks have a charge of -1/3
protons are made of [#] up-quark(s) and [#] down-quark(s) protons are made of 2 up-quarks and 1 down-quark
neutrons are made of [#] up-quark(s) and [#] down-quark(s) neutrons are made of 1 up-quark and 2 down-quarks
Nuclear reactions can be very powerful because they involve *[...]* force, which is.... well.... very strong. Nuclear reactions can be very powerful because they involve *strong* force, which is.... well.... very strong.
The attraction between the quarks of protons and neutrons is what holds the nucleus together; this is known as the [...] force. The attraction between the quarks of protons and neutrons is what holds the nucleus together; this is known as the strong force.
Created by: mr.shapard