Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment....

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Factors affecting Factors affecting Solubility Solubility

Transcript of Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment....

Page 1: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Factors affecting SolubilityFactors affecting Solubility

Page 2: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Activity 1Activity 1Solutions are found at home and

in the environment.Solutions are made up of solutes

and solvents.Solutions can be solid, liquid or

gas.Solutions can be naturally

occurring or manufactured.

Page 3: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Activity 2Activity 2Solutions have only one phase,

thus, a uniform appearance.The components of a solution

cannot be separated through filtration because their particles are very small that they can pass through the holes of the filter paper.

Page 4: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Activity 3Activity 3A saturated solution is a solution that

contains the maximum amount of solute that the solvent can dissolve.

The presence of excess solute that can no longer dissolve is the evidence that a solution is saturated.

An unsaturated solution is a solution that contains less solute than the maximum amount that the solvent can dissolve.

Page 5: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Concentrations of Concentrations of solutionssolutionspercent by volume – amount of

solute in a given volume of solution (g/100 mL)

percent by mass – amount of solute in a given mass of solvent (g/100g)

Page 6: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

What could affect the What could affect the solubility of solutes in solubility of solutes in solutions?solutions?

Add a teaspoon of salt

Add a teaspoon of salt

Stirred

Not stirred

Page 7: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 8: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 9: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 10: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 11: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 12: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Why would the solute Why would the solute dissolve faster when the dissolve faster when the solution is stirred?solution is stirred?

Page 13: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Stirring causes the particles of solute

and solvent to move faster increasing

the chances of contact.

Page 14: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Activity 4Activity 4Which will dissolve faster –

crystals of table salt or the same amount of crushed table salt?

Page 15: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

ProceduresProceduresAdd 50 mL of water

into 2 identical containers.

Add 5 grams of rock salt to one container and 5 grams iodized

salt to the other container.

Record the time it takes the salt to

dissolve in each of the containers.

Independent variable

Dependent variable

Page 16: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

What makes the crushed salt What makes the crushed salt dissolve faster than the dissolve faster than the crystals of salt?crystals of salt?

crystal of table

salt

crushed table salt

Page 17: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.
Page 18: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.
Page 19: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.
Page 20: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.
Page 21: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.
Page 22: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Smaller particles have more edges and corners

where the solvent can be in contact. Thus, the smaller the particle of salt, the

easier it mixes with water.

Page 23: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

The Coffee ProblemThe Coffee ProblemWhy do people stir coffee in

water after they have added sugar?

Page 24: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Parallel InvestigationsParallel InvestigationsActivity 5: How fast does coffee

dissolve in hot water? In cold water? [G1-G5]

Activity 6: Which dissolves faster in hot and cold water: sugar or salt? [G6-G10]

Page 25: Factors affecting Solubility. Activity 1 Solutions are found at home and in the environment. Solutions are made up of solutes and solvents. Solutions.

Prepare a lab sheet that will answer the problem assigned to your group.

Do not forget to formulate a hypothesis for your problem.

Bring the materials that you will need for the investigation next session.