Chapter 1 Introduction: Matter and Measurement

Chapter 1 Introduction: Matter and Measurement

distillation (boiling) separate physically Matter Mixture differences or unevenly mixed filtering Heterogeneous Mixture (uneven, differences) Physical changes uniform

or evenly mixed Homogeneou s Mixture (solutions) cannot separate physically Pure Substance separate chemically cannot separate

Chemical changes Compounds Elements salt, baking soda, oxygen, iron, water, sugar hydrogen, gold NaCl NaHCO3 O2 Fe HO C H O H Au Pure Substances Element: (cannot be separated) (chemically or physically) -only one type of atom

-simplest form of matter retaining its properties Examples: Carbon (C) Helium (He) Gold (Au) Pure Substances Compound: (can be separated chemically) different elements chemically bonded together Examples: Carbon Dioxide (CO2) Water (H2O) Salt (NaCl) Sucrose (C12H22O11) completely new substance with completely new properties

NaCl (compound) Na (element) Sodium is a highly reactive metal stored in oil. Cl2 (element) Chlorine kills organisms in pools. Its also a poisonous green gas. Compound : be separated chemically into can elements which can NOT. O2

H2 O (gas) (liquid) H2 (gas) Hoffman apparatus Mixtures (Solution) physically separated distillation Homogeneous Mixture: by _____________. (boiling) physically mixed evenly it looks the same throughout

Examples: Copper (Cu) and Zinc (Zn) make brass. lemonade Steel (Fe + C + Cr) NaCl + H2O salt water Mixtures Heterogeneous Mixture: physically mixed unevenly can see the different parts Examples: Sand Granite Wood 2 Types: Suspensions & Colloids Separation (Group Discussion)

Sand + Iron (Fe) + Salt (NaCl) is a(n) heterogeneous mixture ______________________ that can be separated by Physically: -pulling out Fe with magnet Physically: -dissolving NaCl in water -filtering sand out -evaporating the water Chemically: -decomposing NaCl with electricity into Na and Cl Quick Quiz! 1. Passing an electric current through a substance produces oxygen and sulfur. This substance cannot be a(n) A. compound.

B. mixture. C. element. D. solution. Quick Quiz. 2. Which of the following is a mixture? A. sodium chloride (NaCl) B. carbon dioxide (CO2) C. sucrose (sugar, C12H22O11) D. air (N2, O2, CO2, H2, Ar, ) Quick Quiz. + 3. A blue-green solid is decomposed by heating. A colorless gas and a black solid appear. The blue-green solid must have been a(n) A. heterogeneous mixture B. homogeneous mixture

C. compound D. element distillation (boiling) separate physically Matter _______ filtering _________ ______geneous Mixture (uneven, differences)

________ changes _______ _____geneous Mixture (________) ________ separate physically _____ Substance separate chemically

cannot separate ________ changes __________ ________ salt, baking soda, oxygen, iron, sugar, water hydrogen, gold NaCl NaHCO3 O2 Fe HO C H O H Au

Recently Viewed Presentations

  • 33. Joyce (1)

    33. Joyce (1)

    James Joyce 7. Dubliners: narrative technique and themes Only Connect ... New Directions James Joyce 7. Dubliners: narrative technique and themes Different linguistic registers the language suits the age, the social class and the role of the characters. Use of...
  • Chapter 4: Time Value of Money - Pearson Education

    Chapter 4: Time Value of Money - Pearson Education

    Bond Prices Rise as the Interest Rates Fall Write the PV of the fixed income security as the sum terms Pure Discount Bonds The pure discount bond is an example of the present value of a lump sum equation we...
  • B What is the difference between a point

    B What is the difference between a point

    Angle ABC and Angle x form a straight angle. x is an exterior angle. Angle CAB + Angle ACB + Angle ABC = 180 degrees. 14 + 30 + ? = 180. 136. 44. 180. Turn to page S.75. Complete...
  • DIY Draught Busting and Secondary Glazing. Warm your

    DIY Draught Busting and Secondary Glazing. Warm your

    and to Transition Belsize for sharing information about their draught busting project. Thanks also to the Ashburton Futures project who developed the DIY secondary glazing guide that has been incorporated into this manual. ... but at a fraction of the...
  • Distributed Systems

    Distributed Systems

    Transitively capture ordering constraints. Need extra server-side state to calculate . One-Hop Dependencies. Small superset of nearest dependencies. Simple to track: Last write. Subsequent reads. Thread-of-Execution. Reads-From. Transitive Closure.
  • 3 - storage.googleapis.com

    3 - storage.googleapis.com

    The job of bringing amino acids (like methionine) to the mRNA and ribosome is the responsibility of tRNA - known as transfer RNA. It is called that because it transfers amino acids to the construction site (mRNA and ribosome). Molecules...
  • ENTREPRENEURIAL DEVELOPMENT IN HILLY AREAS OF JAMMU DIVISION-

    ENTREPRENEURIAL DEVELOPMENT IN HILLY AREAS OF JAMMU DIVISION-

    Entrepreneurial Development in Doda District. District Doda is located in the north and north east portion of Jammu province. The altitude of the district varies from 3000 ft to 15000 ft above the sea level.
  • Powerability - Royal Yachting Association

    Powerability - Royal Yachting Association

    Must be a Sailability Centre. Same ratios as for PB tuition. Volunteering opportunities for PBIs. A single syllabus with certificates for achieving multiple tasks. To compliment the PB scheme, making it more accessible. Developed in consultation with Dart Sailability, amongst...