Download Atoms

Department: LW Science
Understanding by Design
Course: Chem.: Atoms
Standard(s):
Illinois Science Assessment Frameworks
12.11.37 Identify the most familiar elements by name and some of their most familiar properties. Identify the chemical
symbols for familiar elements.
12.11.38 Know that atoms are made of sub-atomic particles (protons, neutrons, electrons) which have positive, neutral, or
negative charges. Understand that the periodic table displays the elements in increasing atomic number and shows how
periodicity of the physical and chemical properties of the elements relates to atomic structure.
12.11.45 Understand that the nucleus of the atom is much smaller than the whole atom yet contains most of its mass.
Understand isotopes.
12.11.54 Know that ions are atoms or groups of atoms that have a positive or negative charge and that polyatomic ions
are a group of covalently bonded atoms that act like a single atom when combining with other atoms. Understand that
metals tend to form positive ions, and nonmetals tend to form negative ions.
12.11.66 Understand that an electrically neutral object has particles within it that are charged, but their charges balance
each other out.
12.11.80 Understand that the electrical force is a universal force that exists between any two charged objects. Opposite
charges attract, like charges repel. The strength of the force is proportional to the charges, and, like gravity, it is inversely
proportional to the square of the distance between the charged bodies.
National Science Education Standards
NSES B1a. Matter is made of minute particles called atoms, and atoms are composed of even smaller components. These
components have measurable properties, such as mass and electrical charge. Each atom has a positively charged nucleus
surrounded by negatively charged electrons. The electric force between the nucleus and electrons holds the atom together.
NSES B1b. The atom's nucleus is composed of protons and neutrons, which are much more massive than electrons. When
an element has atoms that differ in the number of neutrons, these atoms are called different isotopes of the element.
NSES B2B An element is composed of a single type of atom. When elements are listed in order according to the number
of protons (called the atomic number), repeating patterns of physical and chemical properties identify families of
elements with similar properties. This "Periodic Table" is a consequence of the repeating pattern of outermost electrons
and their permitted energies.
Stage 1: Desired Results
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Understandings
Fundamentals:
1. Describe the progression of the atom.
2. Be able to identify the 3 subatomic particles (electrons, protons, neutrons). Understand they differ in terms of relative
charge, relative mass, and location in the atom.
3. Given the atomic number and mass number of an atom, be able to calculate the amount of protons, neutrons, and
electrons (vice versa)
4. Understand that an ion results from a change in the number of electrons. Given the atomic number, mass number, and
charge of an ion, be able to calculate the amount of protons, neutrons, and electrons (vice versa).
5. Understand that an isotope results from a change in the number of neutrons. Be able to explain how two or more
isotopes of the same element differ.
6. Be able to write the complete chemical symbol (nuclear symbol) of an atom, isotope, or ion. Be able to write the
isotope name (isotope notation) (i.e. Chlorine-36)
7. Given the complete chemical symbol or isotope name, be able to calculate the amount of protons, neutrons, and
electrons.
8. Understand the difference between average atomic mass and mass #. Be able to identify which isotope is more
abundant.
Regular Same as Fundamentals with the addition of…
1. Understand the experimental design of Thomson’s Cathode Ray Experiment. Understand how results from this
experiment led to further developments of the atom, specifically the discovery of the electron and the plum pudding
model.
2. Understand the experimental design of Rutherford’s Gold Foil Experiment. Understand how results from this
experiment led to further developments of the atom, specifically the nucleus.
3. Know that the neutron was the last subatomic particle to be discovered by Chadwick.
4. Be able to calculate the percent abundance of each isotope from isotope data.
5. Be able to calculate the average atomic mass of an element from isotope data.
Honors 1. Understand the experimental design of Millikan's Oil Drop Experiment. Understand that the charge and mass of the
electron were determined by this experiment.
Essential Questions
1.
How does structure of the atom relate to its
properties?
2.
Analyze how scientific discovery and
experimentation influence each other.
Knowledge & Skill
See Knowledge & Skills Sheet.
H:\Science\Department Files\DISTRICT
CURRICULUM\Chemistry\Atomic Structure\UBDKnowledge and Skills.
Stage 2: Assessment Evidence
Test, quizzes, labs, homework, worksheets (see district curriculum folder).
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Performance Task Summary
Rubric Titles
Quizzes
Practice problems
Labs
Unit test
Self-Assessments
Other Evidence, Summarized
Self evaluation of "I Can" statements on K&S sheet.
Other assessment information will be obtained through
observations, classroom participation, class discussion &
interactions, and scaffold learning. The final assessment
will be analyzed with Mastery Manager for teachers to
improve future instruction.
Stage 3: Learning Activities
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See District Curriculum folder. The following activities are labeled UBD:
UBD - Percent Abundance Lab
UBD- Manipulating Gold Foil
UBD nut&bolt atomic mass