Solutions Day 2 Chemistry Ms. Boon 11.28.12. Catalyst  Identify the following substances as homogeneous mixtures or heterogeneous mixtures:  Milk 

Slides:

Advertisements

Similar presentations

Chapter 5. Matter Pure Substances ElementsCopperCompoundsWaterMixturesHeterogeneousSalt and PepperHomogeneousKool-Aid.

Advertisements

Matter Pure Substances ElementsCopperCompoundsWaterMixturesHeterogeneousSalt and PepperHomogeneousKool-Aid.

SOLUTIONS & CONCENTRATIONS WHAT IS A SOLUTION ? WHAT IS CONCENTRATION & HOW IS IT MEASURED ?

Unit 7: Solution Chemistry

Chemistry 103 Lecture 20. Chemical Calculations A mixture of 25.0g of H 2 and an excess of N 2 react according to the following equation: 3H 2 (g) + N.

Unit 10 Review Describe the following terms Solution Solvent Solute Soluble Insoluble Miscible Immiscible Homogeneous mixtures of 2 or more substances.

Laboratory Solutions. Solute The substance that is being dissolved NaCl.

Elements, Compounds, Mixtures Review. What is a pure substance made of two or more elements that are chemically combined?

Solutions What Are Solutions? Solution- A homogeneous mixture: a solution has the same composition throughout the mixture. Solvent- does the dissolving.

Laboratory Solutions In the laboratory, we will be using different concentration of chemical solutions. Each protocol will require different solutions.

Friday, Feb. 21 st : “A” Day Monday, Feb. 24 th : “B” Day Agenda  Collect chromatography labs  Begin Section 13.2: “Concentration and Molarity” 

Chapter 15: solutions. Solutions  Types of solutions  Factors Affecting Solubility  Factors Affecting the Rate of Dissolution  Saturation  Ways of.

Solutions. Key Terms A mixture that is the same throughout A mixture that is not the same throughout Another name for a homogenous mixture A mixture in.

SOLUTIONS Chapter Nineteen: Solutions  19.1 Water  19.2 Solutions  19.3 Acids, Bases, and pH.

Unit 10B Review Reg Chem When a solution sits out over a long period of time and water evaporates the concentration of the solution __________.

1 SOLUTIONS A N I NTRODUCTION. 2 Objectives 1. What are different ways of expressing the concentration of a solution? When is each used?

Solutions CH 13. Two Types of Mixtures Homogeneous Same throughout, looks pure EX: Air Heterogeneous Different throughout EX: Sand.

SOLUBILITY DISSOCIATION & MOLARITY CHEMISTRY 30 – UNIT 2 – SOLUBILITY.

Concentration Units: Terms like “dilute” and “concentrated” are not specific. Percent by Mass: Mass % = mass of solute x 100 Total mass of solution Recall:

% by Mass Another way to measure the concentration of a solution % by mass = mass solute x 100 mass solution Solution = solute + solvent.

© Copyright R.J. Rusay Aqueous Solutions Concentration / Calculations Dr. Ron Rusay Fall 2007.

IB Topic 1: Quantitative Chemistry 1.5 Solutions  Distinguish between the terms solute, solvent, solution and concentration (g dm -3 and mol dm -3 ) 

Solution Composition: 15.2 Homework: Page 555, #12a-c, 13ab, 18, 19, 20, 21a-d Tuesday, March 4, Turn in Lab 2.Vocabulary Words (Quiz Friday) 3.Section.

Solution Concentration

Solutions (Chapter 12) Taylor, Tommy, Kayla.

Solutions Parts of a Solution Molarity, Molality, Mole Fraction, Dilution.

Introduction to Chemistry Matter. What is Chemistry? In your own words, please write down how you would define the following words: Biology Physics Chemistry.

Tim Yun, Hanna Webster, Kira Zelnosky

Solutions. Classification of Matter Solutions are homogeneous mixtures.

It’s really not that bad.  mol - the quantity of a given substance that contains as many molecules or formula units as the number of atoms in exactly.

Elements, Compounds and Mixtures

Solutions Dr. Ron Rusay Fall Aqueous Reactions & Solutions  Many reactions are done in a homogeneous liquid or gas phase which generally improves.

Solutions. Classification of Matter Solutions are homogeneous mixtures.

Review of Pure Substances There are two types of pure substances: 1. Elements Elements are composed of one kind of atom. Examples are on the periodic.

Solutions. Classification of Matter Solutions are homogeneous mixtures.

Solutions and Concentrations Notes Page 5. SOLUTIONS A homogenous mixture of two or more substances.

Chapter Nineteen: Solutions  19.1 Water  19.2 Solutions  19.3 Acids, Bases, and pH.

MRS. PLATT HAD TO GO GET A NEW CANISTER OF PROPANE. WHEN SHE GOT BACK, IT WAS USED TO FIRE UP THE GRILL DURING A BACKYARD BARBEQUE. WHAT IS THE REACTION.

Mixtures and Solutions. MATTER is solid liquid gas melts to freezes to evaporates to condenses to anything that has mass and takes up space can be.

Solubility Why was the sleep-deprived chemistry student staring at the orange juice carton? Because it said “CONCENTRATE”

Moles and Molarity Part 2. Molarity Often, chemists use deal with chemicals in solution form. A SOLUTION is a type of MIXTURE in which one substance is.

Chapter Four Reactions in Aqueous Solutions. Chapter Four / Reactions in Aqueous Solutions Solutions and concentrations Solution is a homogenous mixture.

Unit 12 Solutions And you. OBJECTIVE To gain informed insights into reactions that take place in aqueous environments you need to have a solid conceptual.

SolutionsSolubility Molarity DilutionFeeling Lucky.

Chapter Nineteen: Solutions  19.1 Water  19.2 Solutions  19.3 Acids, Bases, and pH.

Do Now: Which mixture is homogeneous and which one is heterogeneous and why? QUEST Tuesday Hand in Mixture Lab! Pennies?

Chapter Nineteen: Solutions

Solubility & Concentration

Mixtures 8.P.1.1.

Solutions and Molarity

Aim # 18: What are some other methods of expressing the concentration of a solution? H.W. # 18 Study pp (sec ) STUDY class notes Complete.

Solution Concentration- Units of Measurement

A heterogeneous mixture of intermediate sized particles is a:

Solutions and Molarity

Molarity and Dilutions

Chapter 16 Solutions.

Unit 6: Solutions Molarity.

Chemical Quantities.

Concentration of Solute

Solution chemistry What are solutions?

Molarity Chemistry.

Chapter 13.5 Expressing solution concentration

Which one of these is more concentrated?

Unit 6: Solutions Molarity.

Concentration of Solution

Introduction to Molarity

Unit 5: Solutions Concentration.

Concentration of Solutions :

Presentation transcript:

Solutions Day 2 Chemistry Ms. Boon

Catalyst  Identify the following substances as homogeneous mixtures or heterogeneous mixtures:  Milk  Gasoline  Muddy water  Steel  Coffee  Ink  Crude oil  Bronze  Brass  seawater Objective Agenda  Catalyst  Homework review  Percent concentration  Exit slip  I can express the concentration of a solution by percent concentration. HW: Read pp , Problems pp. 488 #4, 16, 21, 25

Homework Review: pp The solvent is the substance in excess. There is more of it. The solute is the substance dissolved in the solvent. 4.(a) solvent: water; solute: carbon dioxide (b) solvent: water; solute: apple extract (c) solvent: water; solute: coffee filtrate (d) solvent: water; solute: salt 5.No. A solution is any homogeneous mixture and can be gas & gas or solid & solid. (example: air or brass) 12. Water is evaporating, leaving behind the solute which is salt.

Solutions Mini-Review A solution is a homogeneous mixture. In a solution, the solute is distributed evenly throughout the solvent.

Solutions Mini-Review Therefore, any part of a solution has the same ratio of solute to solvent as any other part of the solution. This ratio (or comparison) of solute to solvent is called concentration.

Percent Concentration One way to express concentration is by using a percentage. Percentage concentration is the number of grams of solute per 100 grams of solution. % concentration = g solute___ x 100% g solution Example: Roundup weed killer is a solution containing 18% chemical pesticide. There are 18 g pesticide for every 100 g solution.

Finding the Percent Concentration % concentration = g solute___ x 100% g solution The denominator is the mass of solution. Add: g solute + g solvent Example 1: What is the percentage by mass of a solution made by dissolving 0.5 g of glucose in 9.5 g of water?

Finding the Percent Concentration % concentration = g solute___ x 100% g solution The denominator is the mass of solution. Add: g solute + g solvent Example 2: What is the percentage by mass of a solution containing g of water and 0.49 g of potassium sulfate (K 2 SO 4 )?

Finding the Percent Concentration % concentration = g solute___ x 100% g solution The denominator is the mass of solution. Add: g solute + g solvent Example 3: What is the percentage by mass of a salt water solution made by dissolving 0.5 mol NaCl in 500 g water? The units must be grams. If given moles, multiply by the molar mass.

Finding the Percent Concentration % concentration = g solute___ x 100% g solution The denominator is the mass of solution. Add: g solute + g solvent Example 4: A student wants to make a 5.0% solution of rubidium chloride and water with 10.0 g rubidium chloride. How much water is needed? If given the %, work backwards to find the unknown mass.

Exit Slip Show all your work and label your answer with the correct units. 1.A chemist dissolves 20 g silver nitrate in 180 g water. What is the percent concentration? 2.A glass of koolaid contains 4.0 g sucrose and 96 g water. What is the percent concentration? 3.A fish tank contains 4 mol NaCl (salt) and 1000 g water. What is the percent concentration?