The Atom and Isotopes Flashcards
1
Q
What was the first model of the atom called?
A
Solid Sphere Model
2
Q
What three particles are found in the atom?
A
Proton
Neutron
Electron
3
Q
Where are protons and neutrons found?
A
In the nucleus
4
Q
Where are electrons found?
A
In orbitals
5
Q
What is the charge of a proton?
A
+1
6
Q
What is the charge of a neutron?
A
0
7
Q
What is the charge of an electron?
A
-1
8
Q
What is the mass of a proton?
A
1
9
Q
What is the mass of a neutron?
A
1
10
Q
What is the mass of an electron?
A
0
11
Q
How do you find the number of protons in an element?
A
Look at the atomic number
12
Q
The sum of protons + neutrons in an atom equals what?
A
Mass number
