Explain how subatomic particles are distributed in an atom
Explain the role of subatomic particles in determining identity, mass and charge of an atom or ion
Select atoms that are isotopes of one another
Calculate the numbers of protons and neutrons in an isotope from mass number or full atomic symbol
Determine the mass number and write full atomic symbol from numbers of protons and neutrons
Calculate the number of electrons, protons, and neutrons in an atom or ion
Predict if electrons are lost or gained to form anions or cations
Periodic properties and the periodic table
Locate the following on a periodic table of the elements: metals, semimetal, and nonmetals; halogens, alkali metals, alkaline earth metals, noble gases, transition metals, lanthanides, actinides, and main group elements
Use the periodic table to predict trends in atomic radii, electronegativity, metallic character, or similar chemical properties
Classify/identify an element as a metal, semimetal, or nonmetal based on properties or location in periodic table
Associate elements with the group/family to which they belong Organization of matter into molecules and ions
Describe the difference between or identify representations of: atoms and molecules, elements and compounds; diatomic and polyatomic molecules; homonuclear and heteronuclear molecules
Know which elements in the periodic table exist as molecules in their elemental state and which as atoms
Chemical and physical changes, States of Matter
Distinguish between physical and chemical changes
Describe or recognize differences in the organization of matter in solid, liquid or gas phases
Determine if heat is absorbed or released when different phase changes occur
Electronic structure
Predict the number of valence electrons an atom has based on location in periodic table
Represent valence electrons in atoms with dots around the element symbol (Lewis Model)
Predict the type of ion an element will form based on where it is in the periodic table
Recognize the shape of atomic orbitals
Chemical bonding
Predict if the bond between two atoms is an ionic, covalent or a metallic bond
Use electronegativity to determine if a bond is polar or non-polar
Chemical formulas and Nomenclature
Predict the formula of an ionic compound formed from two ions
Identify the ions from a formula
Use rules of nomenclature to name ionic and molecular compounds and acidsto write names or formulas
Mass and mole relationships
Use a chemical formula to predict relative amounts of an element in the formula
Calculate the molar mass given a formula
Convert between molar mass, grams and moles
Stoichiometry
Balance chemical equations
Use mole ratios from chemical equations to calculate mole amounts of reactants and products
Perform basic stoichiometric calculations using gram amounts of substances and a balanced chemical equation
Solutions, molar concentration and dilution
Calculate the molar mass given a molecular or ionic compound formula
Convert between moles, molar concentration and volume of solution
Convert between grams, moles, molar concentration and volume of solution
Perform dilution calculations
Enthalpy Conventions
Define exothermic and endothermic reactions
Define the sign of the enthalpy change for exothermic and endothermic reactions
Predict if heat is absorbed or released during exothermic and endothermic reactions
Predict if the temperature of the system increases or decreases during exothermic and endothermic reactions
Dimensional analysis, unit conversions and significant figures
Perform conversions between different unit systems
Use appropriate significant figures in calculations and measurements
Calculate the density of a substance from mass and volume information
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