atomic theory timeline 3 Flashcards
1
Q
difference between atoms and elements
A
atoms make up elements
2
Q
to be an element, it can only have
A
one type of atom
3
Q
parts of an atom
A
electron
nucleus
proton
neutron
4
Q
a subatomic particle with a negative electrical charge
A
electron
5
Q
the dense center of an atom containing protons and neutrons
A
nucleus
6
Q
a subatomic particle within the nucleus of an atom that has a positive charge
A
proton
7
Q
a subatomic particle within the nucleus of an atom that has a neutral charge
A
neutron
8
Q
energy level of an atom
A
2,8,8
9
Q
2,8,8
A
the first shell has two electrons
the second shell has 8 electrons
the third shell has 8 electrons
10
Q
what are orbiting round the nucleus
A
electrons
