1. science
2. chemistry

Name: ___________________________________________
Period: ________
Expectations for Unit Three: The Periodic Table and Atomic Structure
Proof Pass
You should complete at least two out of the three in order to take the Unit Three Proof. If
your proof passes are finished in class on the day of the review (the class period before
the test), then I can answer questions you may have:
Unit Proof
1. Quizzes. There will be four quizzes during this unit on The Periodic Table and Atomic
Structure. The quizzes will not be a surprise; you will be reminded to study for them
the class period before. (20-30 points)
2. “The Missing Person” Activity and periodic chart will be turn in instead of a lab this unit.
(10 points)
3. Bell Ringers. Nearly every day there will be a bell ringer. You will turn bell ringers in at
least three times during each unit, though you may be called on to hand them in
more than once, particularly if you are struggling to complete them or having trouble
with course content. (15 points)
4. Paper. You will be assigned an element on which you will write a short research paper.
We will do the research for the paper in class. You will also be given writing and
research time in class time in class. Whether or not this is homework depends on
how well you use your class time. (15 points). Due Date: ______________________
(Must be on time for full credit. Late papers are docked 10%)
5. Unit Test. The unit test will cover all the learning targets for Unit Three. In order to take
the test in class, on time, you must turn in 2 of the three proof passes. Scheduled
test date: ___________________ (at least 60 points)
Important Dates
Graded proofs will be returned by ____________________.
Retakes will be available until __________________. (Also the cut off date for all late work)
Retakes are only given if all THREE proof pass assignments are complete, as well as any
additional work your teacher thinks is necessary. Plan to pass the first time!
Included in this packet:
1. Vocabulary List with directions for completion
2. Guided Notes with directions for completion
3. Test Prep with directions for completion
Semester 2 Foundations
1
Unit Three: The Periodic Table and Atomic Structure
Vocabulary Proof Pass
Definitions can be found a variety of ways. You can use the class blog to access a semester
glossary (blogs.bethel.k12.or.us/npetersen/). This is done by going to the blog, clicking on the
red bar where it says “glossary” then scrolling down to the link for Semester 2. You can pay
attention in class and add definitions as we work on them during our lessons. You can pull
definitions from the class reading selections as well.
You have a lot of choices when it comes to completing the vocabulary proof pass. You may:
1. Put each word on a note card, with a word on one side and a definition on the back.
Each definition should also come with an example. If you don’t have note cards, feel
free to pick up flashcard templates from me. You can cut them up and use them just
like note cards.
2. Make a more traditional vocabulary list on notebook paper. Make sure that you include
both definitions and examples.
3. Generate electronic flashcards. There are many great websites for this. Here are a
couple of choices: http://www.kitzkikz.com/flashcards/ and http://quizlet.com/createset . These websites let you either print cards (which can be brought on the day of
the unit proof) or e-mail a finished set to someone. You can also show them to me on
your phone the day of the proof. There are also a lot of great flashcard apps—some
of them are free! Just show me the work you have done in the app.
4. Pick up a vocabulary graphic organizer from me. There are always lots of copies at the
front of the room.
5. Use some other kind of system that works for you—just run it by me ahead of time.
Here are your words for Unit One. Good luck!
nucleus
subatomic particle
proton
neutron
electron
atomic number
mass number
atomic mass
group/family
period
isotope
energy level
valance electron
rare earth elements
ion
metal
Semester 2 Foundations
nonmetal
metalloid
alkali metal
alkaline earth metal
transition metal
noble gas
chemical families
radioactivity
2
Unit Three: The Periodic Table and Atomic Structure
Guided Notes Proof Pass
Demonstrating knowledge on these guided notes will prepare you for the final unit proof,
particularly the short answer questions.
Each part of the guided notes shows which learning targets are related to that question.
The guide can be filled out in a variety of ways. You can work on it during class, paying careful
attention to the learning targets we work on and matching them to this study guide. You can use
homework practice and class practice for help. You can access resources available through the
class blog (blogs.bethel.k12.or.us/npetersen/). However you choose to work on the guided
notes, you should work on them throughout the unit.
K 3.2 What are the relative sizes of a proton, a neutron and electron? Where would you find
each in the atom? What charge do they each carry?.
K 3.3 Use the excerpt from the Periodic Table below to tell the atomic number, mass number,
atomic mass for each of the nine pictured elements. Write your answers in the space at the
right:
K 3.4 Describe our current theory of the atom. Tell about two earlier models that were used and
have since been rejected.
Semester 2 Foundations
3
K 3.5 Use the excerpt from the Periodic Table below. Tell the number of protons, neutrons, and
electrons that can be found in the nine listed atoms:
K 3.6 Draw and label a picture of the atom below. In your model, your electrons may be similar
in size to the protons and neutrons. What do we know about the size of electrons compared to
protons and neutrons in a real atom?
K 3.7 List the atomic masses for the first 6 elements in the Periodic Table. What trend do you
notice? How do you find the number of neutrons in an atom by using the atomic mass (or atomic
weight) and the atomic number? What is an atomic mass unit?
Semester 2 Foundations
4
K 3.8 Name the properties of metals, non-metals and metalloids. How do you find them on the
Periodic Table? Describe where they are at and provide some examples of each. Make sure
you can locate them on your Periodic Table.
K 3.9, K 3.12 What is an isotope? What do isotopes have to do with atomic mass? What do we
mean when we say that isotopes are radioactive?
K 3.10 Name three important events in the creating of the Periodic Table and three scientists
who had a part in making it.
K 3.11 Draw an atom model for three of the following atoms: Oxygen, Flourine, Carbon and
Potassium. Below your pictures, write one sentence explaining what happens to the energy of
the electrons as you move out from the nucleus.
Semester 2 Foundations
5
PA 3.1 Using your periodic table, describe some physical and chemical properties for oxygen,
copper, hydrogen, potassium and calcium:
PA 3.2 Hydrogen has three naturally occurring isotopes. 1H (the most common) has a mass
number of 1; 2H has a mass number of 2 and 3H has a mass number of 3. Hydrogen’s atomic
mass is 1.0079. Use this information to draw three different models of hydrogen’s isotopes—you
only need to draw the nucleus.
PA 3.3 Chose three elements (one with an atomic number less than ten, one in the teens and
one in 20’s). Draw a model of each of these atoms in the space below. Tell which family each
element belongs in and compare the number of electrons in the outer shell to the number at the
top of the family in your Periodic Table.
.
Semester 2 Foundations
6
Unit Three: The Periodic Table and Atomic Structure
Test Prep Proof Pass
This test prep should be complete on the day of the test; this is one of your “proof passes” for
unit three. Demonstrating knowledge on the test prep will prepare you for the final unit proof.
Each part of the test prep shows which learning targets are related to that section. The purpose
of the study guide is to give you an idea about the types of questions that will be on the proof.
Test prep can be completed in a variety of ways. You can work on it during class, paying careful
attention to the learning targets we work on in class and matching them to the questions here.
You can access resources available through the class blog (blogs.bethel.k12.or.us/npetersen/).
However you choose to work on the test, you work on it throughout the unit.
K 3.5, K 3.7, K 3.9, K 3.8 Fill in the following blanks and then answer the multiple choice
questions.
Atomic Symbol
Atomic Number
Protons
Mo
Neutrons
Electrons
Atomic Mass
(rounded to the
nearest whole
number)
53
7
14
17
18
40
19
92
21
56
138
Mn
55
69
50
1.
The smallest particle into which an element can be divided and still have the properties
of that element is called a(n)
A) nucleus. B) electron. C) atom. D) neutron.
2.
Where are electrons likely to be found?
A) in the nucleus B) in electron clouds C) mixed throughout an atom D) in definite paths
3. Every atom of a given element has the same number of
A) protons. B) neutrons. C) electrons. D) isotopes.
4. What is the meaning of the word atom?
Semester 2 Foundations
7
A) dividable B) invisible C) hard particles D) not able to be divided
5. Which statement is true about isotopes of the same element?
A) They have the same number of protons. B) They have the same number of neutrons. C)
They have a different atomic number. D) They have the same mass.
6. Which of the following has the least mass in an atom?
A) nucleus B) proton C) neutron D) electron
7. If an isotope of uranium, uranium-235, has 92 protons, how many protons does the isotope
uranium-238 have?
A) 92 B) 95 C) 143 D) 146
8. A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of
A) 6. B) 18. C) 12. D) 15.
9 The elements in each vertical column on the periodic table usually have similar properties
and are called a(n)
A) period. B) group. C) element. D) property.
10. The elements to the right of the zigzag line on the periodic table are called
A) metalloids. B) conductors. C) metals. D) nonmetals.
11. Most metals are
A) solid at room temperature. B) bad conductors of electric current. C) dull. D) not malleable.
12. Elements on the periodic table are arranged in order of
A) increasing density. B) decreasing density. C) increasing atomic number. D) decreasing
atomic number.
13. Which of the following statements describes most metals?
A) They are easily shattered. B) They are gases at room temperature. C) They are dull. D) They
are good conductors of electric current.
14. Which of the following is a property of alkali metals?
A) They are so hard they cannot be cut. B) They are very reactive. C) They are stored in water.
D) They have few uses.
15. Most of the elements in the periodic table are
A) metals. B) metalloids. C) gases. D) nonmetals.
16. A horizontal row on the periodic table is called a(n)
A) group. B) family. C) period. D) atomic number.
17. Elements lying along the zigzag line on a periodic table are
A) metals B) nonmetals C) metalloids D) noble gases
18. How do the physical and chemical properties of the elements change?
A) periodically within a group B) periodically across each period C) periodically within a family
D) periodically across each group
Semester 2 Foundations
8
19. Transition metals are
A) good conductors of thermal energy. B) more reactive than alkali metals. C) not good
conductors of electric current. D) used to make aluminum.
20. The letter C is carbon’s
A) atomic number. B) atomic mass. C) chemical symbol. D) element name.
K 3.2 Label the parts of following atom model and describe how you know how to label it:
K 3.3 Choose five elements from different families on your periodic table. For each atom, tell the
name of its family, its atomic number, atomic mass, the number of neutrons it has and some
properties common to that family of elements.
K 3.4, K 3.10 Make a time line below about the development of the modern atomic theory.
Include the names Democritus, Dalton, Thompson, Rutherford and Bohr on you timeline, along
with relevant dates. Next to each name you should write down some important contributions that
person made.
Semester 2 Foundations
9
K 3.6 Describe what at atom would be like if it was the size of a football stadium.
K 3.7, K 3.9 Use this portion of the Periodic Table and highlight the atomic mass of each listed
element. In the space at the right tell what makes up the mass of an atom. How can I use the
atomic mass to find the mass number? How can I use the mass number to determine the
number of neutrons in an atom?
K 3.8 What is the difference between a metal, a non-metal and a metalloid? Give three
examples of each from your Periodic Table.
K 3.11 Choose an element from the Periodic Table on this page and make a model drawing of it
below, showing the energy level for the electrons. In your model, which electrons have the
lowest energy?
Semester 2 Foundations
10
PA 3.2 What atom does this model represent? How do you know? What is missing from the
model?
What atom does this model represent? How do you know? What is the mass number for this
isotope?
PA 3.3 In the space below, draw an atom model for an atom of your choosing (with an atomic
number of at least 7 and no more than 30) similar to the one above. Label all the parts.
Semester 2 Foundations
11