salt baking soda water sugar oxygen iron hydrogen gold Matter Mixture Pure Substance Elements Compounds Hetero geneous Mixture Homo geneous Mixture separate physically cannot separate ID: 773555
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salt, baking soda, water, sugar oxygen, iron, hydrogen, gold Matter Mixture Pure Substance Elements Compounds Heterogeneous Mixture Homogeneous Mixture separate physically cannot separate physically separate chemically cannot separate Chemicalchanges Physical changes ( solutions ) filtering distillation ( boiling) ( uneven, differences) NaCl NaHCO 3H2O C12H22O11 O2 FeH2 Au differences or unevenly mixed uniform or evenly mixed
Pure Substances Element : -only one type of atom -simplest form of matter retaining its properties Examples:Carbon (C) Helium (He)Gold (Au) ( cannot be separated) (chemically or physically)
Pure Substances Compound : different elements chemically bonded together Examples:Carbon Dioxide (CO2 )Water (H2O) Salt (NaCl)Sucrose (C12H 22O11) (can be separated … chemically)
Sodium is a highly reactive metal stored in oil. Cl 2 ( element ) Chlorine kills organisms in pools. It’s also a poisonous green gas. completely new substance with completely new properties NaCl (compound)Na ( element)
Compound : can be separated … chemically into… H 2 O (liquid) O 2(gas) H2(gas)Hoffman apparatus elements …which can…NOT .
Mixtures Homogeneous Mixture : physically mixed evenly… it looks the same throughout lemonade Steel (Fe + C + Cr) NaCl + H 2 O s alt waterdistillation (boiling)(Solution) Examples :Copper (Cu) and Zinc (Zn) make brass. physically separated by _____________.
Mixtures Heterogeneous Mixture : physically mixed unevenly… can see the different parts Examples: SandGraniteWood 2 Types : Suspensions & Colloids
Separation (Group Discussion) Sand + Iron (Fe) + Salt (NaCl) is a(n)______________________ that can be separated by … heterogeneous mixture Physically:-pulling out Fe with magnetPhysically:- dissolving NaCl in water-filtering sand out-evaporating the waterChemically: -decomposing NaCl with electricity into Na and Cl
Passing an electric current through a substance produces oxygen and sulfur. This substance cannot be a(n) compound. mixture. element. solution. Quick Quiz!
Quick Quiz. 2. Which of the following is a mixture? sodium chloride (NaCl) carbon dioxide (CO 2 ) sucrose (sugar, C12H22O11) air (N2, O2, CO2, H2, Ar, …)
Quick Quiz. 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) heterogeneous mixture homogeneous mixture compound element +
salt, baking soda, sugar, water oxygen, iron, hydrogen, gold Matter _______ _____ Substance________ __________ ______ geneous Mixture _____geneous Mixture separate physically ________ separate physically _________ _______ separate chemically cannot separate ________changes ________ changes ( ________ ) filtering distillation ( boiling) ( uneven, differences ) NaCl NaHCO3H2O C12H22 O 11 O 2 Fe H 2 Au