Unit 3: Atoms and Elements - Unit 3 Test - RETAKE
Name:__________________
Check your spelling!
Use full sentences
that make sense!
(scents?cents?)
1.
You may use a periodic table. Period: ___________________
Use full Sentences! TAGS!
Explain your answers using examples and evidence!!
a. Use the periodic table to complete the following information for Fluorine:
Name: ______________________________
Chemical Symbol: ______________________
Atomic Number:_______________________
Atomic Mass: _________________________
# of Protons: _______________
# of Neutrons: ______________
# of Electrons: ______________
Draw a Bohr Model Here:
Draw a Lewis Dot Structure Here:
2. b. Use the periodic table to complete the following information for Sulfur:
Name: ______________________________
Chemical Symbol: ______________________
Atomic Number:_______________________
Atomic Mass: _________________________
# of Protons: _______________
# of Neutrons: ______________
# of Electrons: ______________
Draw a Bohr Model Here:
Draw a Lewis Dot Structure Here:
c. Explain how you determined the number of protons, neutrons and electrons in an atom. Use the words: atomic
mass and nucleus in your answer. (TAGS)
Unit 3: Atoms and Elements - Unit 3 Test - RETAKE
2. Determine the identity of each element described below. Write your answer in the space next to each
description:
a. This non-metal is very reactive, has properties similar to rubidium.
b. This nonmetal is in the same period as barium.
c. This metal is a liquid at room temperature.
d. Look at your periodic table, element # 118 has very little information known about it yet. Infer what this element
might be like by looking at its group and period. (Hints: List mass, valence electrons, name, properties, number of
protons, electrons, neutrons)
3. To classify objects means to group them according to similar properties. Use the chart of known elements
and properties to put the elements into groups. Explain how you grouped the elements. You may draw a chart
on the back, but must explain your reasoning! (Malleable = easily hammered into thin sheets; Ductile = easily
drawn out into a thin wire)
Physical Properties
Shiny, good conductor of electricity and heat, solid at room temperature
Copper
Good conductor of electricity and heat, solid at room temperature
Potassium
Good conductor of electricity and heat, solid at room temperature
Magnesium
Gas at room temperature, non-malleable, non-ductile, poor conductor of electricity and heat
Neon
Colorless, odorless, gas at room temperature
Helium
Gas at room temperature, non-malleable, non-ductile, poor conductor of electricity and heat
Radon
Explain your groups:
Chemical Properties
Reactive
Reactive
Reactive
Nonreactive
Nonreactive
nonreactive
Unit 3: Atoms and Elements - Unit 3 Test - RETAKE
4. a. List the charge, location and mass of a proton, neutron and electron:
Charge
Mass
Location
Proton
Neutron
Electron
b. Draw and label an atom.
Include all parts and locations in the atomic model:
5. Choose one of the following questions. Answer below using specific examples or evidence to support your
ideas. Use full sentences. TAGS. Attach another sheet of paper if necessary.



Can scientific ideas change over time? If so, explain how using specific examples. If not, explain
why not.
What is the purpose of making scientific models? Explain using in specific examples.
How do scientists make new discoveries? Explain the process of discovering new information.
Unit 3: Atoms and Elements - Unit 3 Test - RETAKE
T.A.G.S. Checklist: Use this checklist to help you write to a prompt in all classes.
 T: Translate (restate) the question as your topic sentence
 A: Answer question completely
 G: Give supporting details that are relevant to the topic; use data if necessary
 S: Spell correctly and use specific, accurate and appropriate vocabulary
Draw your own periodic table here for question # 3 (use a ruler if necessary):
Unit 3: Atoms and Elements - Unit 3 Test - RETAKE
Rubric:
1: a-b


Must choose element from 2nd/ 3rd Period of Table
All answers correct
Period 2: Li, Be, B, C, N, O, F, Ne
3 4 5 6 7 8 9 10
7 9 11 12 14 16 19 20
Period 3: Na, Mg, Al, Si, P, S, Cl, Ar
11 12 13 14 15 16 17 18
23 24 27 28 31 32 35 40
c.
 Atomic Mass – Atomic # = Neutrons
 Explain mass of atom is in the nucleus
 Protons = 1 amu, electrons = ~0 amu, neutrons = 1 amu each
 Protons = atomic #
 Protons = electrons (charge neutral)
2:
 A. Calcium (Ca)
 B. Carbon (C)
 C. Potassium (K)
 D. 118, 300 + AMU, Uu?, 1 valence, 8 energy levels, reactive, Alkali Metal, solid
3:
 Proton
+
nucleus
1 amu
 Neutron
0
nucleus
1 amu
 Electron
electron cloud
~0 or 1/2000 amu
4:
 Definite groups based on common properties
 Explain reasoning
 More complicated reasoning = 4
5:




Answered correctly
Uses specific examples with explanations
4 = describe SPECIFICALLY how technology, discoveries, etc helps our scientific ideas change. Use at
least one example of how one idea led to another with names, etc.
TAGS (3 + details)