Chapter 1 Section 3 Notes and Practice problems MATTER PURE SUBSTANCES Definite composition ELEMENTS COMPOUNDS ONLY ONE TYPE OF ATOM Classification of Matter. MIXTURES TWO OR MORE TYPES OF SUBSTANCES, PHYSICALLY COMBINED IN A VARIABLE RATIO HOMOGENEOUS HETEROGENEOUS TWO OR MORE TYPES OF ATOMS, CHEMICALLY BONDED IN A FIXED RATIO variable composition, LOOKS LIKE ONE THING, CLEAR... variable composition, CAN SEE THE DIFFERENT PARTS, CLOUDY, CHUNKS... MADE OF ONLY ONE TYPE OF PARTICLE Oct 1211:47 AM Oct 311:20 AM Mixtures HOMOGENEOUS MATTER PURE SUBSTANCES Definite composition MADE OF ONLY ONE TYPE OF PARTICLE MIXTURES TWO OR MORE TYPES OF SUBSTANCES, PHYSICALLY COMBINED IN A VARIABLE RATIO variable composition, LOOKS LIKE ONE THING, CLEAR... ELEMENTS COMPOUNDS ONLY ONE TYPE OF ATOM TWO OR MORE TYPES OF ATOMS, CHEMICALLY BONDED IN A FIXED RATIO On Periodic Table HOMOGENEOUS HETEROGENEOUS Solution HETEROGENEOUS variable composition, CAN SEE THE DIFFERENT PARTS, CLOUDY, CHUNKS... variable composition, LOOKS LIKE variable composition, CAN SEE THE ONE THING, CLEAR... DIFFERENT PARTS, CLOUDY, CHUNKS... • Sugar Water Vinegar (acid and water) •• Brass copper and zinc • 14 K gold (58.3% gold & some silver or Milk, salad dressing copper or zinc or nickel) Oct 311:20 AM MATTER Oct 32:33 PM MATTER PURE SUBSTANCES Definite composition MIXTURES TWO OR MORE TYPES OF MADE OF ONLY ONE TYPE OF SUBSTANCES, PHYSICALLY PARTICLE COMBINED IN A VARIABLE RATIO ELEMENTS COMPOUNDS ONLY ONE TYPE OF ATOM TWO OR MORE TYPES OF ATOMS, CHEMICALLY BONDED IN A FIXED RATIO HOMOGENEOUS HETEROGENEOUS TWO OR MORE TYPES OF SUBSTANCES, PHYSICALLY MIXTURES PURE SUBSTANCESCOMBINED IN A VARIABLE RATIO HOMOGENEOUS HETEROGENEOUS TWO OR MORE TYPES OF ATOMS, ELEMENTS COMPOUNDS variable composition, LOOKS LIKE ONE THING, CLEAR... variable composition, CAN SEE THE DIFFERENT PARTS, CLOUDY, CHUNKS... CHEMICALLY BONDED IN A FIXED RATIO ONLY ONE TYPE OF ATOM variable composition, LOOKS LIKE ONE THING, CLEAR... variable composition, CAN SEE THE Definite composition MADE OF ONLY ONE TYPE OF PARTICLE DIFFERENT PARTS, CLOUDY, CHUNKS... Oct 311:20 AM Oct 311:20 AM 1 Mixtures Types of Matter HOMOGENEOUS Practice Problems Pure substances variable composition, LOOKS LIKE ONE THING, CLEAR... #1 In the spaces provided, classify each of the following substances as: an element or a compound. HETEROGENEOUS variable composition, CAN SEE THE DIFFERENT PARTS, CLOUDY, CHUNKS... 1) table salt NaCl 2) sugar C12H22O11 3) oxygen 4) 24 K gold 5) water H2O 6) carbon dioxide CO2 Answers 1. compound 2. compound 3. element 4. element 5. compound 6. compund 7. element 8. compond 7) iron 8) hydrogen peroxide H2O2 • Sugar Water Vinegar (acid and water) •• Brass copper and zinc • 14 K gold (58.3% gold & some silver or Milk, salad dressing Answers 1. compound 2. compound 3. element 4. element 5. compound 6. compound 7. element 8. compound copper or zinc or nickel) Oct 32:33 PM Types of matter Oct 128:22 AM Practice Problems Classify each of the following substances as: an element, a compound, a solution(homogeneous mixture), or a heterogeneous mixture. 1) baking Soda = NaHCO3 2) Carbon 3) Alcohol = CH3CH2OH 4) Milk 5) water 6) Instant Coffee in water 7) Chocolate Chip Cookie #2 Types of Matter 1) Calcium 2) Gasoline = C6H14 + C7H16 + C8H18 + C9H20 3) Pop Tarts 4) Sea Water 5) Steel = Iron + Carbon 6) Ceasar Salad 7) Copper 8)Kool Aid in water 8) Nitrogen Answers 1) Compound 2) Element 3) Compound 4) Heterogeneous mixture 5) Compound 6) Solution 7) Heterogenous Mixture 8) Element Answers 1)Element 2)Solution 3)Heterogenous Mixture 4)Heterogeneous 5)Solution 6)Heterogenous 7)Element 8)Solution Oct 128:23 AM Types of Matter Oct 128:26 AM Types of Matter #5 #4 Classify each of the following substances as: an element, a compound, a solution (homogeneous mixture), or a heterogeneous mixture. 1. Sand 2.Table Salt 3. Pure Water In the spaces provided, classify each of the following substances as: an element, a compound, a solution (homogeneous mixture), or a heterogeneous mixture. 1)Raisin Bran cereal 2) Silver 3) Lithium Carbonate = Li2CO3 4)Apple Pie 5) Iced Tea 6) Potassium 7) Soda Pop before opening 8)Calcium Nitrate Ca(NO3)2 4. Soil 5. Soda Pop just 6. Pure Air after opening 7. Carbon Dioxide 9. Bronze 12. Sugar 11. Salad Dressing dissolved in Water 10. Oxygen #3 Classify each of the following substances as: an element, a compound, a solution(homogeneous mixture), or a heterogeneous mixture. 8. 24 K Gold Answers 1)heterogeneous mixture 2)element 3)compound 4)heterogeneous mixture 5)solution 6)element 7)solution 8)compound Answers part I. 1) mixture 2) compound 3) compound 4) mixture 5) Heterogeneous mixture 6) solution 7) compound 8) element 9) solution 10) element 11) mixture 12) solution Oct 128:16 AM Oct 128:18 AM 2 Laboratory Methods How to separate mixtures Sorting Filtering Distilling Page 1 of 2 paper or cloth or mesh, held by a funnel: separates solids from liquid Used for separating liquid from liquids uses boiling point differences Equipment: Boiling Flask: to boil liquid. Condensation Tube: Uses water to cool Vapors and recondenses them. Oct 32:36 PM Laboratory Methods How to separate mixtures Page 2 of 2 for separating very small Chromatography amounts of mixtures. Paper, silica gel on glass Solvent (water, etc) crawls up the paper. Some parts go with solvent, some stay on paper. Electrophoresis (DNA Analysis) for separating very small amounts of mixtures. Oct 32:36 PM How could you separate a mixture of iron filings, salt, sand and water? Hint: you will need multiple methods. Sep 291:08 PM 3
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