2.1 Isotopes Flashcards
1
Q
Proton (Position, Mass, Charge, Job)
A
In the nucleus, heavy (1amu), +1, determines the identity of an atom
2
Q
Neutron (Position, Mass, Charge, Job)
A
In the nucleus, heavy (1amu), 0, holds the nucleus together
3
Q
Electron (Position, Mass, Charge, Job)
A
Outside the nucleus, virtually zero, -1, responsible for reactivity
4
Q
Isotope
A
same element but with a different mass
5
Q
7 protons, 7 neutrons, 10 electrons
A
Nitrogen atom, -3 charge, 14amu
6
Q
Carbon, 12 amu, -4 charge
A
6 protons, 6 neutrons, 10 electrons
7
Q
Why are isotopes useful in scientific research?
A
Some are radioactive and you can use it to test if something absorbed something radioactive. They also can be used to determine the age of a fossil.