Download mass number = protons + .neutrons mass number

Name
Hour _
Date
ATOHS
:'
You can becomemorefamiliarwith atomicstucture of somecommonsubstancesby
comgletingthe chart befow. For each substance,you have been givenenoughinformationto fill
in all the blanks,
Remember:
1. The numberof protonsequalsthe numberof electrons. protons = electrons
2. Theatomicnumberegualsthe numberof protons. atomicnumber = protofls
3. The massnumberequalstfre numberof protonsplus numberof neutrons.
massnumber= protons+ .neutrons
4. The massnumberminusthe atomicnumberequalsthe numberof neutrons.
massnumber- atomicnumber= neutrons
Element Syrnbol Atomic Mass
Numberof
number number protons
Hefium
He
2
4
Lithium
Li
3
7
Zinc
Zn
30
65
AI
13
o
11
14
N
Au
12
35
17
26
Numberof Numberof
eleqtrons neutrons
14
solid,gas
or liquid
Name:
Hour:
A T O MTCS T R U C T U B E :
1. What do each of the foltowingstandfor:
Tungsten
Answerthe followingquestionsabout the parts of the atom.
What is the charge on an electron? Where is the neutron found?
What is the charge of a Proton?
Where are electrons f ound?
In a neutral atom, the numberof protons equals the
numberof
What is the charge of a neutron?
lsotopesof an elementdiffer by the numbersof
that they have.