Atomic Structure Flashcards
1
Q
Explain electric zaps when you rub two things together
A
Rubbing transfers electrons from one object to the other
One positive, one negative object
Both attract so they zap
2
Q
Balloon experiment
A
Electrons repel paper electrons
Protons are at the front
Positive and negative attract
3
Q
Most of the atom’s mass is where
A
In the nucleus
4
Q
Proton’s determine what?
A
The atomic number and the type of element
5
Q
Protons and electrons are
A
in equal proportion
6
Q
Protons have an atomic weight
A
of 1 atomic mass unit
7
Q
Electrons have an atomic weight
A
that is negligible and so is not counted
8
Q
Electrons are involved in the
A
formation of chemical bonds
9
Q
Neutrons have a mass of
A
1 atomic mass unit
10
Q
Why do atomic masses have decimal places
A
