CHEM 210 EXAMS SCRIPT UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔What is matter? - ✔✔Anything with mass and volume
✔✔What are the states of matter? - ✔✔Solid, liquid, and gas (plasma is advanced)
✔✔What is the difference between mass and weight? - ✔✔Mass is constant; Weight
depends on gravity
✔✔What is the law of conservation of matter? - ✔✔Matter cannot be created or
destroyed
✔✔What is the difference between an element and a compound? - ✔✔Element consists
of one type of atom; Compound consists of bonded elements
✔✔What is the speed of light equation? - ✔✔c = λν
✔✔What is the equation for photon energy? - ✔✔E = hν
✔✔What is the de Broglie equation? - ✔✔λ = h / mu
✔✔What are the electron configuration rules? - ✔✔Aufbau, Pauli, and Hund
✔✔What are the capacities of s, p, and d orbitals? - ✔✔s = 2, p = 6, d = 10
✔✔What is the trend for atomic radius? - ✔✔Increases down a group, decreases across
a period
✔✔What is the trend for ionization energy? - ✔✔Increases across a period, decreases
down a group
✔✔What is ionic bonding? - ✔✔Electron transfer
, ✔✔What is covalent bonding? - ✔✔Electron sharing
✔✔What determines bond type? - ✔✔Electronegativity difference
✔✔What is the difference between polar and nonpolar bonds? - ✔✔Polar is unequal
sharing; Nonpolar is equal sharing
✔✔What is the formula for formal charge? - ✔✔FC = valence - lone - 1/2(bonding)
✔✔What is hybridization? - ✔✔Mixing orbitals
✔✔What are the bond angles for linear, trigonal planar, and tetrahedral shapes? -
✔✔Linear = 180°, Trigonal planar = 120°, Tetrahedral = 109.5°
✔✔What is the difference between sigma and pi bonds? - ✔✔Sigma is the first bond; Pi
represents additional bonds
✔✔How is molar mass calculated? - ✔✔Sum of atomic masses
✔✔What is the mole concept? - ✔✔6.02×10²³ particles
✔✔What is the difference between empirical and molecular formulas? - ✔✔Empirical is
the simplest ratio; Molecular is the actual formula
✔✔What is the formula for molarity? - ✔✔M = mol / L
✔✔What does a balanced equation mean? - ✔✔Same number of atoms on both sides
✔✔What is a limiting reactant? - ✔✔The reactant that runs out first
✔✔What is theoretical yield? - ✔✔The maximum possible product
✔✔What is the formula for percent yield? - ✔✔% = (actual / theoretical) × 100
✔✔What is the ideal gas law? - ✔✔PV = nRT
✔✔What is the combined gas law? - ✔✔P1V1/T1 = P2V2/T2
✔✔What is the formula for gas density? - ✔✔d = PM / RT
✔✔What is the kinetic molecular theory? - ✔✔Gas particles move randomly and collide
elastically
AND ANSWERS SURE A+
✔✔What is matter? - ✔✔Anything with mass and volume
✔✔What are the states of matter? - ✔✔Solid, liquid, and gas (plasma is advanced)
✔✔What is the difference between mass and weight? - ✔✔Mass is constant; Weight
depends on gravity
✔✔What is the law of conservation of matter? - ✔✔Matter cannot be created or
destroyed
✔✔What is the difference between an element and a compound? - ✔✔Element consists
of one type of atom; Compound consists of bonded elements
✔✔What is the speed of light equation? - ✔✔c = λν
✔✔What is the equation for photon energy? - ✔✔E = hν
✔✔What is the de Broglie equation? - ✔✔λ = h / mu
✔✔What are the electron configuration rules? - ✔✔Aufbau, Pauli, and Hund
✔✔What are the capacities of s, p, and d orbitals? - ✔✔s = 2, p = 6, d = 10
✔✔What is the trend for atomic radius? - ✔✔Increases down a group, decreases across
a period
✔✔What is the trend for ionization energy? - ✔✔Increases across a period, decreases
down a group
✔✔What is ionic bonding? - ✔✔Electron transfer
, ✔✔What is covalent bonding? - ✔✔Electron sharing
✔✔What determines bond type? - ✔✔Electronegativity difference
✔✔What is the difference between polar and nonpolar bonds? - ✔✔Polar is unequal
sharing; Nonpolar is equal sharing
✔✔What is the formula for formal charge? - ✔✔FC = valence - lone - 1/2(bonding)
✔✔What is hybridization? - ✔✔Mixing orbitals
✔✔What are the bond angles for linear, trigonal planar, and tetrahedral shapes? -
✔✔Linear = 180°, Trigonal planar = 120°, Tetrahedral = 109.5°
✔✔What is the difference between sigma and pi bonds? - ✔✔Sigma is the first bond; Pi
represents additional bonds
✔✔How is molar mass calculated? - ✔✔Sum of atomic masses
✔✔What is the mole concept? - ✔✔6.02×10²³ particles
✔✔What is the difference between empirical and molecular formulas? - ✔✔Empirical is
the simplest ratio; Molecular is the actual formula
✔✔What is the formula for molarity? - ✔✔M = mol / L
✔✔What does a balanced equation mean? - ✔✔Same number of atoms on both sides
✔✔What is a limiting reactant? - ✔✔The reactant that runs out first
✔✔What is theoretical yield? - ✔✔The maximum possible product
✔✔What is the formula for percent yield? - ✔✔% = (actual / theoretical) × 100
✔✔What is the ideal gas law? - ✔✔PV = nRT
✔✔What is the combined gas law? - ✔✔P1V1/T1 = P2V2/T2
✔✔What is the formula for gas density? - ✔✔d = PM / RT
✔✔What is the kinetic molecular theory? - ✔✔Gas particles move randomly and collide
elastically
