Download to read offline
Chemistry, science, formulas, exercise.pptx
- 1. Chemistry John Joemmel Rodelas BSChemical Engineering, UPLB ‘14
- 2.
- 3.
- 5. What is Chemistry? Itis the study of matter Composition and Properties Transformations Energy
- 6. Laws Law of Conservationof Mass Law of Constant Composition Law of Multiple Proportions
- 7. Laws Law of Conservationof Mass Total mass of products = Total mass of reactants Mass output = Mass input
- 8. Laws Law of ConstantComposition All samples of a compound has same composition
- 9. Laws Law of MultipleProportions The ratio of masses for combined elements to form a compound is given by a certain ratio
- 11.
- 12. Properties of Matter Physical Color,odor, hardness, density Chemical reactivity
- 13. Properties of Matter Intensive Properties Isn’t affected by amount Boiling point, molecular weight, density, specific gravity Extensive Properties Is affected by amount Mass and volume
- 16. Intermolecular Forces ofAttraction London Dispersion Forces/ Van der Waals present in all substances whether it be polar or non-polar Dipole-dipole interactions present in polar substances only Hydrogen Bonding strongest form of IMFA; exists between a Hydrogen atom and an electronegative atom (N, O, F)
- 17. Intermolecular Forces ofAttraction Higher IMFA: Higher boiling point Higher surface tension Higher melting point Higher latent heat of fusion, vaporization, sublimation
- 18. The Ideal GasEquation PV = nRT Where P = Pressure in atm V = Volume in L n = # of moles of species T = Temperature in K R = Universal Gas constant (0.08206 atmL/molK)
- 20. Gas Laws PV =nRT Boyle’s Law V is inversely proportional to P Charles’ Law V is directly proportional to T Avogadro’s Law V is directly proportional to n
- 21. Trends in thePeriodic Table L-R increasing, T-B decreasing Electronegativity Ionization energy L-R decreasing, T-B increasing Atomic size Metallic character
- 23. Solutions Homogeneous mixture Solute is dissolved in a solvent
- 26.
- 27.
- 28.
- 29. Energy Changes inReactions