Atom: A Closer Look Lesson 2 Flashcards
1
Q
Isotopes
A
Atoms of the same element with different masses. Their difference is the number of neutrons that they have.
2
Q
Has a relative mass of 1.00734
A
Proton
3
Q
Has a relative mass of 1.00866
A
Neutron
4
Q
Has a relative mass of 0.00055
A
Electron
5
Q
Has an actual mass of 9.10 x 10^-28 g
A
Electron
6
Q
Has an actual mass of 1.673 x 10^-24 g
A
Proton
7
Q
Has an actual mass of 1.675 x 10^-24 g
A
Neutron
8
Q
Symbol for electron
A
e-
9
Q
Symbol for proton
A
p
10
Q
Symbol for neutron
A
n
11
Q
The letter that denotes the atomic number
A
Z
12
Q
The letter that denotes the symbol of an element
A
X
13
Q
The letter that denotes the symbol for the mass number
A
A
14
Q
This number is equal to how many electrons and protons are in the atom
A
Atomic number
15
Q
This number is equal to the sum of the protons and neutrons in the atom
A
Mass number (A)
