Using Density as a Conversion FactorEX: The density of Ti is 4.50g/cm^3 . What is the volume of 7.20 g of Titanium?Collect and Organize:4.50 g/cm^37.20 g of TiVolume= ?Density= M/VAnalyze:V=M/D7.20g/4.50 g /cm^3grams cancel out1.60 cm^3Temperature ScalesFahrenheit (°F)Celsius (°C)Kelvin (K)K = °C+ 273.15°C = 5/9 (°F-32)5/9th don’t effect sig figsCHAPTER 2 (Electrons)Radioactivity- spontaneous emission of high-energy radiation and particlesBeta particles ( β, high-energy electrons)Alpha particles ( α, +2 charge, mass= He nucleus)The Nuclear AtomThe NucleusPositively charged center of an atom, containing nearly all of the atom’s massAbout 1/10000 the size of the atomConsists of two types of particlesProton- positively charged subatomic particlesNeutrons- electrically neutral subatomic particlesAtomic Mass Units (amu)Unit used to express the relative masses of atoms and subatomic particlesEqual to 1/12 of a carbon atom:6 protons +CHEM 111 1st Edition Lecture 4 Outline of Last Lecture I. Terms II. C.O.A.S.T.III. MeasurementsIV. Basic SI UnitsV. Antioxidant and redox regulation of gene transcription Outline of Current Lecture II. Significant Figures in Math OperationsIII. Precision and AccuracyIV. Changing Units: Conversion Factorsa. Temperature ScalesV. Chapter 2 (Electrons)a. Radioactivityb. The Nuclear Atomc. Atomic Mass UnitsCurrent LectureSignificant Figures in Math Operationso Rounding ofo Dropping “insignifican” digitso Only at the end of calculationso “Weakest Link” Principleo The number of significant figures in the final result cannot be greater than the “weakest link” used in the calculationo Actual rule depends on mathematical operationPrecision and Accuracyo Accuracy- agreement between measured value and accepted or true valueo Precision- agreement among repeated measurementso S/g measured many times and getting the same result despite that not being accurateChanging Units: Conversion FactorsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Conversion factor- a fraction in which the numerator and denominator represent equivalent quantities, but expressed in diferent unitso Converting a value from one unit to another o Initial units x (desired units/initial units)= desired unitsUsing Density as a Conversion Factor EX: The density of Ti is 4.50g/cm^3 . What is the volume of 7.20 g of Titanium? Collect and Organize: 4.50 g/cm^3 7.20 g of Ti Volume= ? Density= M/V Analyze: V=M/D 7.20g/4.50 g /cm^3- grams cancel out- 1.60 cm^3Temperature ScalesFahrenheit (°F)Celsius (°C)Kelvin (K)K = °C+ 273.15°C = 5/9 (°F-32)5/9th don’t efect sig figs CHAPTER 2 (Electrons)Radioactivity- spontaneous emission of high-energy radiation and particles- Beta particles ( β, high-energy electrons)- Alpha particles ( α, +2 charge, mass= He nucleus) The Nuclear Atom- The Nucleuso Positively charged center of an atom, containing nearly all of the atom’s masso About 1/10000 the size of the atomo Consists of two types of particles Proton- positively charged subatomic particles Neutrons- electrically neutral subatomic particles Atomic Mass Units (amu)- Unit used to express the relative masses of atoms and subatomic particles- Equal to 1/12 of a carbon atom:o 6 protons