Sch3u Exam Review Graded A+ 2024

Average atomic mass {Ans: Average = [weight x % abundance] + [weight x % abundance]}Characteristics of combustion {Ans: faster process, occurs @ high heat, incomplete combustion (produce soot/CO), not a continuous process}Diatomic gas naming {Ans: 7 pattern on periodic table}Complete combustion vs incomplete combustion {Ans: flame is yellow = more O2 needed for complete, its incomplete combustion - hazardous, can produce CO2, water vapour, elemental carbon, soot, and CO flame is blue = complete combustion - efficient in generating heat}Reactions that produce a gas {Ans: - Carbonates and acids - Sulfites and acids - Ammonium salts and bases - Sulfides and acids}Non-polar compounds {Ans: not charged (i.e. pure covalent)}Burette {Ans: }Percentage yield formula {Ans: Percentage Yield = (actual yield / theoretical yield) x 100}Supersaturated solution {Ans: contains more dissolved solute than a saturated solution at the same temperature - is achieved by heating up the solution}Types of double displacement reactions {Ans: Reaction that forms a solid - salt (aq) + salt (aq) + precipitate Reaction that forms a gas - CO2: acid + carbonate ion (CO3) = H2O + CO2 - NH3: OH ions + ammonium ions + H2O +