ALL TIME CHEM REVIEW DECK Flashcards
1
Q
Subatomic Particles
A
protons, neutrons, and electrons (can look on Table O)
2
Q
location of protons and nuetrons
A
in the nucleus
3
Q
location of electrons
A
around the nucleus in the orbital
4
Q
mass of protons + neutrons
A
1 amu
5
Q
mass of electron
A
0
6
Q
nucleus is positive because off…
A
the protons
7
Q
the atom is neutral b/c
A
protons = electrons
8
Q
Difference between ions and atoms
A
Atoms are neutral because they have an equal number of protons and electrons.
Ions are charged particles which are formed when atoms either gain or lose electrons.
9
Q
Rutherford’s Discovery
A
most of the atom us empty space and the nucleus is small dense and positive
10
Q
Thompson
A
discovered electrons
11
Q
Bohr (planetary)
A
electrons travel in fixed paths called orbits
