Download Chapter 4 Introduction to Atoms

Atomic Structure
Test Review
What am I best known for?
1. Bohr c
2. Rutherford b
3. Democritus f
4. Schrodinger &
d
Heisenberg
5. Dalton e
6. Thomson a
a. Discovering the
electron
b. Discovering the
nucleus
c. Electrons orbit the
nucleus in energy
levels
d. Electrons can be found
in electron clouds
e. Atomic Theory
f. Coming up with the
concept of the atom
7.What is the positively
charged particle in an
atom? Where is it
located?
7.Proton; Nucleus
8. What is an atom of an
element that has the
same number of
protons and different
number of neutrons
called?
8. Isotope
9. What is the region
of an atom that
contains the most of
the mass?
9.Nucleus
10.What is determined 10.Atomic
by the number of
protons in an atom?
Number
11. What is the weighted
average of all the
naturally occurring
isotopes of an element?
12. What is the smallest
particle into which an
element can be divided
and still be the same
substance?
11.Atomic mass
12. Atom
13. What is the
negatively charged
particle of an atom
called? Where
would it be
located?
13. Electron;
Electron
Clouds
14. What is the
positively charged
particle of an atom
called? Where
would it be
located?
14. Proton;
Nucleus
15. What is a
particle with no
charge called?
Where is it
located?
16. What is the
dense center of
the atom called?
15. Neutron;
Nucleus
16. Nucleus
17. The nucleus is:
• Small or Large
• Loose or Dense
• Positive or
Negative
• Small
• Dense
• Positive
18.An atom of oxygen
with 8 protons, 8
electrons, and 10
neutrons would
have a mass
number of?
18
19.Who has the most 20. If an isotope of
mass – a proton,
chlorine, chlorine-37,
neutron, or
has 17 protons, how
electron? Who
many protons does
has the least?
chlorine-35 have?
• Protons and
Neutrons
• Electron
17 protons
21.An atom of
22. What is
uranium with 92
the
protons, 143
meaning of
neutrons, and 92
“atom”?
electrons would have
a mass number of?
235
Not able to
be divided
23. Which four statements are true about isotopes?
a. Same number of protons
b. Same number of neutrons
A
c. Different number of protons
d. Different number of neutrons
D
e. Same atomic masses
f. Different atomic masses
F
g. Same atomic numbers
h. Different atomic numbers
G
24. What happens if the
number of electrons
and protons are not
equal?
The atom has a charge
(It’s an ION!)
25. How do you
calculate mass
number?
Number of Protons +
Number of Neutrons
27. How is the
26. What
atomic mass of an
information
element
does the
calculated?
atomic number
give you?
Number of
Protons
Atomic mass is the
weighted average
of the element’s
isotopes.
28. What is the dense center of the atom?
Nucleus
29.What are the positively charged particles?
Protons
30. What are the negatively charged
particles?
Electrons
31. What are the particles with no charge?
Neutrons