Solutions and Concentration

Slides:

Advertisements

Similar presentations

Title: Soft-Drink Recipes Purpose: To gain experience with the concept of concentration Q? What is concentration? Date:

Advertisements

Lesson 12: What Happens When Substances are Mixed with Water?

Lesson 13: Bearly Alive Solution Concentration.

Dilutions and Percent Solutions

1 Chapter 7Solutions 7.4 Percent Concentration Copyright © 2009 by Pearson Education, Inc.

Review Chapter 2 MW – Molecules and Solutions. 1- What is a Molecule? pg 40 A molecule is a group of two or more chemically bonded atoms. Ex: H 2 O, CO.

Molarity ICS III Week 7.

Strength of a Solution.  Dilute – low amount of solute dissolved in solvent  Concentrated – high amount of solute dissolved.

1. 2 Solutions Why does a raw egg swell or shrink when placed in different solutions?

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

Solutions, Concentration, Dilution. -combination of two or more different substances -components are easily distinguished -can separate components by.

Solutions A solution is formed when a substance is dissolved in a liquid. The concentration of the solution may be expressed as – grams per Litre g L -1.

1 Chapter 7Solutions 7.4 Percent Concentration Copyright © 2009 by Pearson Education, Inc.

Solutions  A solution is a homogenous mixture whose component substances cannot be distinguished.  Eg: Salt water, Gatorade, tap water, vodka, Kool-Aid.

Solution or Pure Substance

Mixtures and Solutions

Solutions & Solubility Concentration. Concentrations of Solutions Concentration of a solution is a measure of the amount of solute that is dissolved in.

Ch Solutions II. Solubility & Concentration.

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

Solution: A mixture in which individual molecules or ions are dispersed in a liquid. Solvent: The liquid that makes up the majority of the solution. e.g.,

Solutions Part II: Concentration Units. Percent solutions.

Topic 6. 5 Solutions. Solutions are homogeneous mixtures. The most common way to express solution concentration is by molarity.

Concentration Calculations Molarity. Objectives To calculate the molecular weight and moles of a substance To calculate the Molarity of a substance using.

Solutions IB Chemistry Pages A solution is a homogeneous mixture of 2 or more substances. It is made of a solvent and a solute.

Solutions. MIXTURES heterogeneous homogeneous Suspension Solution : substances mixed so thoroughly that at the level of particles no clusters of particles.

{ Solutions (1.5) Year 11 DP Chemistry Rob Slider.

1.5 Solutions. Assessment Objectives Distinguish between the terms solute, solvent, solution and concentration (g dm–3 and mol dm–3) Solve.

Solutions, concentrations dilutions. Solutions Homogeneous mixture Two parts but you can only see one The solvent does the dissolving – Water is often.

Different Ways of Expressing Concentration Grade 10 ST.

Physical Properties.

Identify the solute or solvent

Concentration and Solubility

Are homogeneous mixtures that come in solid, liquid, or gaseous form.

Other methods to express concentration

Chemical Solution Preparation

Other methods to express concentration

Converting units.

Concentration and Solubility

Solutions and Molarity

Physical Properties.

Solubility CN What is solubility?

Unit 6: Solutions Molarity.

Preparing and Diluting Solutions

Solubility Activity 37: What Dissolves?.

Solubility & Concentration

What is the transmittance of a solution?

Solubility & Concentration

Unit 8: Concentration and Molarity (M)

PREPARING SOLUTIONS AND REAGENTS

Solutions A solution is a homogeneous mixture (1 phase) where we can’t distinguish the substances that compose it even with the aid of observation.

Jeopardy With your host….. Mme. Tilley.

Changes in matter solutions.

Solution chemistry What are solutions?

Which one of these is more concentrated?

II. Solubility & Concentration

Solubility & Concentration

What is the transmittance of a solution?

Unit 6: Solutions Molarity.

Concentration Dilution Solubility

Concentrations in Percent

Concentration %.

Solubility & Concentration

Concentration and Solubility

Concentration of a Solution

Presentation transcript:

Solutions and Concentration

Materials And Outline Outline: Materials: Review solutions What is concentration More/less concentration Calculating concentration Independent/dependent variables Materials: Pencil and eraser Calculator Goggles

What is a solution? Solution = solute + solvent Homogeneous mixture of solute and solvent Solute: substance dissolved Often a solid Solvent: usually a liquid in which the solute is dissolved Solution = solute + solvent

Example of a solution I take a spoonful of Nesquik powder and mix it into my milk to make chocolate milk. What is the solute? What is the solvent? What is the solution?

The amount of substance within a given volume What is concentration? The amount of substance within a given volume C= m/V C: concentration (g/L) m: mass of solute (grams) V: volume of solution (litres)

More/less concentrated What does it mean when something is more concentrated than something else? Example

More/less concentrated Given: m=8g V=4L m=2g V=1L Find: 4L C= m/V C=8g/4L C=2g/L C=2g/1L C=2g/L

Practice Problem – Calculating Concentration Emma made herself 50ml of Kool-Aid by dissolving 2.5g of the powder into water. What is the concentration of the Kool-Aid in g/L? Given: Find:

Practice Problem – Calculating Concentration Jeremy is having a party and is making Minute Made juice. He mixes in 100g of the concentrate with some water to produce 2000mL of juice. What is the final concentration (g/L) of the juice? Given: Find: m = 100 g V = 2000 mL = 2L C=m/V C = 100g / 2L = 50g/L

Variables Independent variable: Dependent variable: The variable that is controlled Dependent variable: The variable that changes in response to the independent variable

Examples of Variables You are looking at the effect of mass of solute on the concentration of a solution. Identify the independent and dependent variables. Independent variable: Dependent variable: