1.2 Atomic Structure Flashcards
1
Q
What does the nucleus of an atom contain?
A
Protons and neutrons
2
Q
What surrounds the nucleus of an atom?
A
Shells of electrons
3
Q
What charge do protons have?
A
Positive
4
Q
What charge do neutrons have?
A
No charge
5
Q
What charge do electrons have?
A
Negative
6
Q
Why is the overall charge of an atom neutral?
A
Because the number of protons is equal to the number of electrons
7
Q
What are elements arranged in order of in the periodic table?
A
Their atomic number
8
Q
What does the atomic number represent?
A
The number of protons or electrons
9
Q
What does the mass number represent?
A
The total number of protons and neutrons
