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Matter Station Answers

Learn about intensive and extensive properties, mixture classification, and methods for separating liquids and solids in chemistry experiments. Understand how density, solubility, and magnetism play key roles.

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Matter Station Answers

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  1. Matter Station Answers

  2. Title: Intensive/Extensive Notes • Will the type of plastic your chose float in water? • If it’s density is less than water: Yes (black blocks) • If it’s density is more than water: No (clear blocks) • Will it float in liquid gold? • Yes! Gold is a lot denser than plastic

  3. Title: Intensive/Extensive Notes • Intensive vs Extensive • Density is an INTENSIVE property. • Mass is an EXTENSIVE property. • How can you determine whether a property is intensive or extensive? • Measure properties when you have different masses/volumes of the substance and see if they are the same

  4. Title: Intensive/Extensive Notes • Explain raisin phenomenon using density. • Bubbles stick to raisin, changing its density to something less than 1.0 g/mL. • The raisin floats to the top • The bubbles pop • The raisin’s density goes back to normal and it sinks

  5. Mixture Classification Practice • Heterogeneous mixture • pure substance • Homogeneous mixture • Heterogeneous mixture • Compound/Pure Substance • Element/Pure Substance • Heterogeneous mixture • Solution • Beans  • Wax  • Steel wool  • Sand, iron, H2O  • Water  • Copper  • Oil and water  • Copper Sulfate + H2O 

  6. Title: Mixture Classification Practice I) Homogeneous mixture (air and some other compound) J) Homogeneous mixture or compound if it’s just SiO2 K) Heterogeneous mixture L) Compound/Pure Substance I) Styrofoam  J) Sand K) PbI2 + KNO3 L) Salt 

  7. Mixture Classification Practice • Mixture • Compound • Element • Element • Mixture/Solution • Mixture • Compound • Mixture/Solution • Mixture/Solution • S and Fe  • Sodium Bicarbonate • Sodium Metal  • Chlorine Gas  • Copper Sulfate in H2O  • Silver chloride in H2O  • Copper Sulfate crystal  • NaCl in H2O • Nickel and tin alloy 

  8. Mixture Classification Practice • Mixtures and Pure Substances are opposites • Pure substance can be elements or compounds

  9. Properties of Elements

  10. Properties of Elements • Physical properties can be tested w/o changing the substance • Chemical properties can only be tested by changing the substance

  11. Title: Separating liquids • Description Separatory Funnel • Tear dropped shape container with valve at bottom • Place two liquids that don’t mix in funnel • Use valve at bottom to extract the most dense and close valve just before the other liquid comes out • Physical Property: • Density & Solubility

  12. Title: Separating liquids • Distillation Apparatus • Liquid evaporates, gas moves to condensing tube where it condenses. • Substance with higher boiling point is left in flask • Physical Property used? • Boiling point

  13. Title: Separating liquids • Chromatography • Water moves up the filter paper via capillary action • Components of substance separate as the substance moves up the filter paper • Mobile Phase • Water • Stationary Phase • Filter paper

  14. Title: Separating liquids • Physical Property used in chromatography? • Solubility • How is chromatography different from the other two techniques? • Substances aren’t in separate containers • Some kinds of chromatography will separate them, though

  15. Title: Separating Solids • Mass Iron added to sand 6.05g • Mass Iron removed from sand 6.35 • Difference between a and b: 0.30 g • Percent error = 0.30/6.05*100 =4.9% • Description of separation technique • Use magnet to get iron out • Physical property it uses • magnetism

  16. Title: Separating Solids • Salt and pepper separation • Separate through static electricity • Rub balloon to generate charge, use charged balloon to attract charged pepper • Physical property used? • Charge

  17. Title: Separating Solids • Gravity filtration • Filter paper folded to fit in funnel • Mixture poured into funnel • Larger particles stay in filter paper, while liquid goes through • Physical property used? • Solubility and Particle Size

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