UNIT 1: Atomic Structure Flashcards
1
Q
The atomic number of an element is the number of _______ in the nucleus
A
protons
2
Q
_____ is demonstrated in objects with LIKE charges
A
Repulsion force
3
Q
The 3 principle parts of an atom are the ______, ______, and ______
A
electron, neutron, proton
4
Q
Direct current flows in only ____ direction
A
one
5
Q
The proton has a ____ charge
A
positive
6
Q
Electrical current is the ____
A
flow of electrons
7
Q
The neutron has ___ charge
A
no
8
Q
Alternating current _____ its direction of flow at regular intervals
A
reverses
9
Q
The nucleus of an atom contains _____
A
neutrons and protons
10
Q
_______ is demonstrated in objects with UNLIKE charges
A
Attraction force
11
Q
The valence shell of an atom is the ____
A
outer shell
12
Q
The electron has a _____ charge
A
negative
