Essays /

Not Actually Essay

Essay preview

This document is designed to help North Carolina educators teach the Essential Standards (Standard Course of Study). NCDPI staff are continually updating and improving these tools to better serve teachers.

Essential Standards: Chemistry ● Unpacked Content
For the new Essential Standards that will be effective in all North Carolina schools in the 2012-13.

What is the purpose of this document?
To increase student achievement by ensuring educators understand specifically what the new standards mean a student must know, understand and be able to do.
What is in the document?
Descriptions of what each standard means a student will know, understand and  be  able  to  do.    The  “unpacking”  of  the standards done in this document is an  effort  to  answer  a  simple  question  “What  does  this  standard  mean  that  a  student  must  know  and  be  able  to  do?”  and  to  ensure the description is helpful, specific and comprehensive for educators.

How do I send Feedback?
We intend the explanations and examples in this document to be helpful and specific. That said, we believe that as this document is used, teachers and educators will find ways in which the unpacking can be improved and made ever more useful. Please send feedback to us at [email protected] and we will use your input to refine our unpacking of the standards. Thank You! Just want the standards alone?

You can find the standards alone at . Note on Numbering: Chm–Chemistry

Chemistry ● Unpacked Content

Current as of August 17, 2012


Matter: Properties and Change
Essential Standard and Clarifying Objectives
Chm.1.1 Analyze the structure of atoms and ions.

Chm.1.1.1 Analyze the structure of atoms, isotopes, and ions. Chm.1.1.2 Analyze an atom in terms of the location of electrons. Chm.1.1.3 Explain the emission of electromagnetic radiation in spectral form in terms of the Bohr model. Chm.1.1.4 Explain the process of radioactive decay using nuclear equations and half-life.

What does this standards mean a child will know and be able to do?

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: 235
or U-235
92 U
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 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. Chm.1.1.3

Understand that energy exists in discrete units called quanta. Describe the concepts of excited and ground state of electrons in the atom: 1. Gaining energy results in the electron moving from its ground state to a higher energy level. 2. When the electron moves to a lower energy level, it releases the energy difference in the two levels as electromagnetic radiation (emissions spectrum).

Chemistry ● Unpacked Content

Current as of August 17, 2012


Articulate that this electromagnetic radiation is given off as photons. Understand the inverse relationship between wavelength and frequency, and the direct relationship between energy and frequency. Use  the  “Bohr  Model  for  Hydrogen  Atom”  and  “Electromagnetic  Spectrum”  diagrams  from  the  Reference  Tables  to  relate  color,   frequency, and wavelength of the light emitted to the energy of the photon. Explain that Niles Bohr produced a model of the hydrogen atom based on experimental observations. This model indicated that: 1. an electron circles the nucleus only in fixed energy ranges called orbits; 2. an electron can neither gain or lose energy inside this orbit, but could move up or down to another orbit; 3. that the lowest energy orbit is closest to the nucleus.

Describe the wave/particle duality of electrons.
Use the symbols for and distinguish between alpha ( 24He), and beta ( -10e) nuclear particles, and gamma ( ) radiation include relative mass).
Use shorthand notation of particles involved in nuclear equations to balance and solve for unknowns. Compare the penetrating ability of alpha, beta, and gamma radiation. Conceptually describe nuclear decay, including:

1. Decay as a random event, independent of other energy influences 2. Using symbo...

Read more


-10 -12 -13 -18 -235 /acre/standards/new-standards/#science 1 1.7 1/2000 10 11 12 13 14 17 2 2012 22.4 235 24he 3 4 5 6 7 8 9 92 abbrevi abil abl absorb abund acet achiev acid acid-bas acid/strong activ actual ad adding/removing affect alkali alkalin allow alon alpha ammonium among analyz and/or angl anion anoth answer appli applic appropri aqueous area arrang articul atom attract august averag avogadro b balanc base behind believ bent beta better binari block bohr boil bond bp brittl broken burn c calcul call calorimetr capac carbon carolina catalyst cation caus celsius ch3cooh chang charact character characterist charg chateli chemic chemistri child chm chm.1.1 chm.1.1.1 chm.1.1.2 chm.1.1.3 chm.1.1.4 chm.1.2 chm.1.2.1 chm.1.2.2 chm.1.2.3 chm.1.2.4 chm.1.2.5 chm.1.3 chm.1.3.1 chm.1.3.2 chm.1.3.3 chm.2.1 chm.2.1.1 chm.2.1.2 chm.2.1.3 chm.2.1.4 chm.2.1.5 chm.2.2 chm.2.2.1 chm.2.2.2 chm.2.2.3 chm.2.2.4 chm.2.2.5 chm.3.1 chm.3.1.1 chm.3.1.2 chm.3.1.3 chm.3.2 chm.3.2.1 chm.3.2.2 chm.3.2.3 chm.3.2.4 chm.3.2.5 chm.3.2.6 circl clarifi class classifi close closest cloud co2 coeffici collid collig collis color column combin combust common compar complet complex compon composit compound comprehens comput concentr concept conceptu condit conduct configur conserv constant contain content continu contrast contribut convent cool correct could cours coval creat criteria current curv d d-level dalton data decay decomposit decreas defin degre depend depress der deriv describ descript design desir determin develop di diagram diatom differ differenti dilut dioxid dipol dipole-dipol direct discret dispers dissoci dissolv distinguish distort dna document done dot doubl draw dualiti ductil due e earth educ effect effort either electr electrolyt electromagnet electron electroneg element elev emiss emit empir en end endotherm endothermic/exothermic energet energi ensur equal equat equilibrium essenti etc evalu event ever evid exampl exceed except excit exist exotherm expect experiment explain explan exponenti express extend extent f factor famili feedback [email protected] fill find fission fix follow forc form format formula framework freez frequenc function fusion gain gamma gas gase gaseous general geometri given go graph graphite/diamond greater greek ground group h h-bond h2o h2so4 hair half half-fil half-lif halogen hc2h3o2 hcl heat heating/cooling help high higher hno3 hold homogen horizont hydrat hydrocarbon hydrogen hydronium hydroxid i.e ice ideal identif identifi improv includ increas increasing/decreasing independ indic inert infer influenc inform inher inorgan input insid insolubl intend intens inter interact intermolecular interpret intra invers involv ion ionic ioniz isotop iupac joul justifi k kelvin kinet know knowledg l laboratori lack law le length level lewi life light like lime linear liquefi liquid liter litmus locat london london/van lone lose lost low lower lowest luster m1v1 m2v2 macromolecul made main malleabl mass materi matter mava mbvb mcp mean measur melt memor metal metal/nonmetal metalloid metals/nonmetals/metalloids mhf mhv mixtur mobil model molar mole molecul molecular molten move mp must n n/v n1/v1 n1/v2 name natur ncdpi necessarili need negat neither net network neutral neutron new nile nitrat nobl nomenclatur nonelectrolyt nonmet nonmetal north notat note nrt nuclear nucleus number nylon o object observ occur octet oh one orbit order order/disorder orient osmot overal oxid oxygen p p/t p1 p1/t1 p1v1 p1v1/t1 p2 p2/t2 p2v2 p2v2/t2 p3 pair paper particl particular penetr per percent percentag perform period ph phase phenolphthalein photon physic place planar plateaus pleas plus poh point polar polar/nonpolar polyatom polym poor posit potenti precaut precipit predict predomin prefix presenc present pressur principl probabl problem proceed process produc product properti proport protein proton provid pt purpos pv pvc pyramid q qualit quanta quantit quantiti question radiat radioact radius random rang rate ratio react reactant reaction reactiv reason recogn reduct refer refin reform region relat relationship releas remov replac repres repuls result revers row rule safeti said satur scale school sea segment send seri serv share shell shift shorthand show signific similar simpl singl size solid solubl solut solute-solv solv solvent specif spectral spectrum splint stabil stabl staff standard state stock stoichiometr stp strength stress strong stronger structur student studi sublim substanc suffici sulfat summar surfac symbol symmetri synthesi system tabl take tast teach teacher temperatur tend term ternari test tetra tetrahedr thank theori tie titrat tool touch transfer transit trend tri trigon tripl two type u understand uniqu unit unknown unpack updat us use v/t v1/t1 v2/t2 valenc valu vapor variabl various vertic volum vs vsepr waal want water water-wat wave/particle wavelength way weaker weight well whether within without write z