220 likes | 232 Views
This chapter discusses the general properties of matter, including mass, weight, volume, and density. It also covers the different phases of matter (solid, liquid, gas, and plasma) and the phase changes that occur through melting, freezing, vaporization, condensation, sublimation, and deposition. Furthermore, it explores the chemical properties and changes that substances undergo, such as flammability and the ability to support burning.
E N D
Chapter 2 Notes Properties of Matter 2.2 lbs = 1 kg 1 kg = 9.8 N
Density Video (buoyancy) http://www.youtube.com/watch?v=PDl7jpq6Sek&p=5CC7DFCA0FBD2D4B&playnext=1&index=12 #2(eggs and density)
I. General Properties of Matter *Matter: anything that has mass and volume -General properties of matter include mass, weight, volume, and density.
A. Mass *amount of matter in an object(constant) *measure of the inertia of an object. *Inertia: resistance to change in motion.
B. Weight *response of mass to the pull of gravity(not constant) *Gravity: force of attraction between objects. -Metric unit of weight is the Newton(N). Ex:
C. Volume *amount of space an object takes up.
D. Density -Ex: p48 -Density of water is 1g/ml. *Specific gravity: ratio of the mass of a substance to the mass of an equal volume of water.
II. Phases of Matter *Physical properties: can be observed without changing the identity of the substance. Ex’s: -Four phases of matter: solid, liquid, gas, and plasma. p70-73 http://www.chem.purdue.edu/gchelp/liquids/character.html
A. Solid -definite shape and definite volume. *Crystal: particles arranged in a regular, repeating pattern. *Crystalline solids: made up of crystals. *Amorphous solids: lose their shape under certain conditions.
B. Liquids -take the shape of their container. -No definite shape, but definite volume. http://www.youtube.com/watch?v=IPfG4OdGEyI #4(Breathtaking! Slow Motion Puff) *Viscosity: resistance of liquid to flow.
C. Gases pp88 -no definite shape, or definite volume. *Boyle’s Law: vol decreases, pressure increases. -P1 V1 = P2 V2 -varies inversely -graph ex: http://www.grc.nasa.gov/WWW/K-12/airplane/aboyle.html
*Charles’s Law: temp increases, vol increases. - T1 V2 = T2 V1 -varies directly -graph ex: http://physics.gac.edu/~mellema/Aapt2001/Charles'%20Law.htm
Boyle’s and Charles Law: Examples • http://www.chem.uiuc.edu/webFunChem/BoylesLaw/BoyleIndex.htm • http://www.chem.uiuc.edu/webFunChem/CharlesLaw/CharlesIndex.htm
D. Plasma -Stars have matter in the plasma phase. -very high in energy.
III. Phase Change -Phase change by adding or taking away nrg. -Phase changes in matter: 1. melting 2. freezing 3. vaporization 4. condensation 5. Sublimation 6. Deposition *Physical Change: change in phase ex: pp74-77
A. solid - liquid *Melting: *Melting point: *Freezing: *Freezing point:
B. liquid - gas *Vaporization: liquid to a gas *Evaporation: *Boiling: *Boiling Point: *Condensation: gas to liquids
C. solid - gas *Sublimation: solid to gas ex: dry ice *Deposition: gas to solid ex: frost
D. heat, temp, and phase chng -Phase changes are accompanied by increases in heat nrg but not by increases in temp. - Figure 13 p77 http://scienceworld.wolfram.com/physics/Gas.html
IV. Chemical Properties and Changes *Chemical properties: substance changes into other new substances. 1. Flammability 2. Ability to support burning
-Chem property describes a substance’s ability to change into a diff subst. -Chem chng : process by which the substance chngs. *Chem Rxn: chem. Chng -produces new subst with new and diff phys and chem. properties.