Mixtures, Solubility, and Soluions Chapter 13 Material on Midterm—LAST CHAPTER

1-Substances and Mixtures Matter: Substances and Mixtures Matter is anything that has __________ and takes up ___________ Nearly all types of matter can be sorted into just two major categories—_____________ and _____________ mass space substances mixtures

13.1 notes- page 87 Put the green table toward the top of the page. Use pp 453-457 to fill the table out with your partner. Your picture of the lab should be on p 86

Element or compound?

Full sentences for full credit! Writing Prompt #1 (of 3) Write the answer on the left page of your notebook Describe two ways that compounds are different than mixtures. Full sentences for full credit!

1-Substances and Mixtures The Ratio of Elements in a compound A compound is a pure substance The ratios in a compound are ALWAYS THE ________ EX: Water is ____________ The water to oxygen mass has a ratio of 1:8 Same in 1 drop to 100 gallons Different ratio? _________________! SAME H2O NOT WATER

1-Substances and Mixtures What is a mixture? A __________ is two or more substances that are physically blended but are not chemically bonded together No chemical reaction No compound formed Each substance keeps its original ___________ The Ratio of Components in a Mixture No fixed ratio—_____ always the same mixture identity not

1-Classifying matter Types of mixtures homogeneous mixture evenly A ___________________________ is a type of mixture in which the individual substance are ____________ mixed Example: Apple juice, salt water Appears to be a single substance Cannot be filtered, cannot scatter light Also known as a solution homogeneous mixture evenly

2- Properties of Solutions Parts of a solution The solute is the substance that is dissolved The solvent is the substance that exists in the greatest quantity in a solution

1-Substances and Mixtures What is a suspension? A suspension is a mixture in which particles are large enough to be dispersed, but they settle out over time Can be _______________, can scatter __________ What is a colloid? A colloid is a mixture in which the particles are dispersed throughout but are not heavy enough to settle out ___________ be filtered, _______ scatter light filtered light Cannot can

Summary video No Yes No Yes Mixture Type Solute particle size Can it be filtered? Does it scatter light? Solution Small Suspension Large Colloid Medium No Yes No Yes

2- Properties of Solutions Concentration of Solutions The concentration is the __________ of a particular solute in a given amount of solvent Units: g/mL Lots of solute  __________________ Little solute _______________ amount concentrated dilute

2- Properties of Solutions Solubility _______________ is the maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure Saturated solutions are solutions that contain the ______________ amount of solute that the solution can hold at a given temperature and pressure Unsaturated solutions are solutions that can still _____________________ solute at a given temperature and pressure maximum dissolve more

2- Properties of Solutions How does temperature affect solubility? For liquid solvents A higher temperature ____________ the solubility of a gas A higher temperature _____________ the solubility of a solid or liquid How does pressure affect solubility? A higher pressure ______________ the solubility of a gas decreases increases increases

2- Properties of Solutions What is a solubility curve? This is a graph that shows how ___________________ of a substance can change with _______________ Let’s read the graph! X-axis – ___________________ Y-axis – ___________________ Questions to solve At what temperature can a certain solute amount dissolve? How much solute can dissolve at a certain temperature? solubility temperature Temperature Solubility

To what temperature would water have to be heated if I wanted to dissolve 70 grams of NH3? To what temperature would water have to be heated if I wanted to dissolve 70 grams of NH4Cl? How many grams of KClO3 can be dissolved into 100 g H2O heated to 70°C? How many grams of KClO3 can be dissolved into 100g H2O heated to 45°C? 10˚C 85˚C 35 grams 20 grams

2- Properties of Solutions How fast a solute dissolves All speed up ______________ dissolving

Full sentences for full credit! Writing Prompt #3 (of 3) Write the answer on your purple sheet. Give two ways that I can increase the speed of dissolving a sugar cube in a glass of water. Full sentences for full credit!