Download Chem Unit2 template - Region 7 Professional Development

2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
College Prep Chemistry Unit 2
Atomic Theory & Structure
Essential Standard:
Chm.1 Analyze the structure of atoms and ions.
Essential Questions:
1. Why do scientists use models in chemistry?
2. How would you describe Rutherford’s experiment?
3. How would you describe the contributions made by scientists to develop the atomic theory?
4. How do the early models of the atom lead to the current atomic theory?
5. How would you describe subatomic particles?
6. What is the relationship between an isotope and the mass of an atom?
What do you need to know to calculate the average atomic mass of an electron.
Clarifying Objective:
Curriculum Goals/Objectives (to be assessed at the end of the unit/quarter)
Chm.1.1.1 Analyze the structure of atoms, isotopes, and ions.
Characterize protons, neutrons, electrons by location, relative charge, relative mass (p=1, n=1, e=1/2000).
• Use symbols: A= mass number, Z=atomic number
• Use notation for writing isotope symbols:or U-235
• Identify isotope using mass number and atomic number and relate to number of protons, neutrons and electrons.
• Differentiate average atomic mass of an element from the actual isotopic mass and mass number of specific isotopes. (Use example
calculations to determine average atomic mass of atoms from relative abundance and actual isotopic mass to develop understanding).
Chm.1.1.2 Analyze an atom in terms of the location of electrons.
• Analyze diagrams related to the Bohr model of the hydrogen atom in terms of allowed, discrete energy levels in the emission spectrum.
• Describe the electron cloud of the atom in terms of a probability model.
• Relate the electron configurations of atoms to the Bohr and electron cloud models.
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2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
Unpacking: What does this standard mean a student should know, understand, and be able to do?
Students will be able to
Atomic Theory
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Describe the composition of the atom and the experiments that led to that knowledge
Describe how Rutherford predicted the nucleus
Understand the inverse relationship between wavelength and frequency, and the direct relationship between energy and frequency
Analyze diagrams related to the Bohr model of the hydrogen atom in terms of allowed, discrete energy levels in the emission spectrum
Describe the electron cloud of the atom in terms of a probability model
Atomic Structure
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Characterize the protons, neutrons, electrons: location, relative charge, relative mass (p=1, n=1, e=1/2000).
Use symbols: A= mass number, Z=atomic number
Use notation for writing isotope symbols: 235
or U-235
92 U
Identify isotope using mass number and atomic number and relate to number of protons, neutrons and electrons
Have a conceptual awareness of the nature of average atomic mass. (Relative abundance of each isotope determines the average- no
calculations)
Essential Vocabulary:
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Protons, neutrons, electrons, nucleus, ion
Quantum mechanical model, Solar System Model
Analyze (calculate) average atomic mass from relative abundance and actual isotopic mass
Learning Targets: “I Can”
Identify Student Success: "I Will"
Students can identify the regions and contents of an atom
Students can calculate the number of all three subatomic particles
I will be able to state what the subatomic particles are, where they are
located, their relative charges and masses and number
Students can find the average mass of any element
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2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
Students will be able to find what part of the electromagnetic
spectrum has high or low wavelength/frequency and how they are
related to electrons
Students will be able to accurately find the average isotopic mass using
% abundances.
Students will be able to draw and label a wave diagram and explain
how an electron can gain or lose energy and how this is related to the
electromagnetic spectrum.
Resources: Text, notes, videos, demo(quantum leap), isotope lab
Extensions (for students who achieve the goals initially): Seek out virtual labs/advanced internet activities that are relevant.
Reteaching strategies/intervention plans (for students who do not achieve the goals initially):
Incorporating prior info and prior knowledge into next sections. Be available for help with extra practice on a one-on-one basis
Assessment Tasks: major test, homework
1. What is an Atom? Worksheet and video
2. History of the atom notes and video
3. Isotope Lab
4.
Demo – quantum leap electron
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2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
21st Century Skills
Activity
Communication Skills
When presenting information,
distinguishing between relevant and
irrelevant information
Explaining a concept to others
Isotope lab – which atoms (m&m’s) to use and which to ignore.
Also why the diff. colors of m&m isotopes have different masses
Conclusion – how are m&m’s related to the concept of an isotope
Computer Knowledge
Using word-processing and database
programs
Using excel to plot the percent abundances of each m&m isotope
Developing visual aides for presentations
3d model of different isotopes
Using a computer for communication
Find 3-D models on line of different isotopes to explain to others
Learning new software programs
Employability Skills
Persisting until job is completed
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Worksheets including practice calculating e, p, n and avg
isotopic mass
All activities
Working independently
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Isotope Problems, video questions, rvw notes to find answers
Developing career interest/goals
How do atoms vary and what diseases do to atoms/cells -research
Assuming responsibility for own learning
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2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
Responding to criticism or questions
Information-retrieval Skills
Searching for information via the
computer
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Atomic Theory Time-line and/or essay of the development of
the atom
Searching for print information
Searching for information using
community members
Language Skills - Reading
Following written directions
Identifying cause and effect relationships
Summarizing main points after reading
Locating and choosing appropriate
reference materials
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Most of the activities can be presented as opportunities for
students to follow written directions.
 Isotope lab
 How to use a spectrophotometer
 How not using all of the m&m’s can alter the avg isotopic
mass
 Atomic Theory KWL or concept map for vocab and/or history
scientists
Find and read online articles about the development of the atom and
form a time line
Language Skill - Writing
Using language accurately
Using the term atom number inplace of # p or that an atom is the
same thing as an element
Organizing and relating ideas when writing
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Lab write-ups that include variables, and conlcusion
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2011 ENTER CURRICULUM AREA Curriculum Guide-Alleghany County Schools
Proofing and Editing
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Synthesizing information from several
sources
Using video clips to give visual to how scientists performed labs to
discover subatomic particles
All activities
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