why Flashcards
1
Q
charge of protons
A
positive
2
Q
weight of protons
A
1 amu
3
Q
important function of protons
A
determines identity of the atom
4
Q
charge of neutrons
A
none
5
Q
weight of neutrons
A
1 amu
6
Q
important function of neutrons
A
holds nucleus together
7
Q
charge of electrons
A
negative
8
Q
weight of electrons
A
virtually none
9
Q
important functions of electrons
A
responsible for reactivity
10
Q
isotope
A
atom with different amounts of neutrons
11
Q
charges that attract vs repel
A
same charges repel, opposite charges attract
12
Q
coulombic attraction and amount of charge
A
x2 charge= x2 force
13
Q
coulombic attraction and distance
A
x2 distance=1/4 force
14
Q
electronegativity
A
15
Q
11 protons, 11 neutrons, 12 electrons
A
weight: 22, charge:-1, element: sodium
16
Q
why are isotopes useful for research
A
they can be used as a tracer due to their measurable half life
17
Q
A
