Do Now (6 min)Draw the phase diagram to the right AND LABEL it with the following terms:

PressureTemperatureCritical pointTriple point

Do Now Discussion

Pressure

Temperature

Critical Point

Triple Point

Label the phase diagram with the following terms:

Mixtures and SolutionsIntro

Book NotesDebrief

What is a mixture?A combination of two or more pure substances

in which each substance retains its individual properties

Chrome + Iron = STEEL

Salt + H2O = Ocean

Why are mixtures important to us?Humans deal with very few pure substances.

Many of the chemicals we work with are actually mixtures!

Pure gold is too soft, so we mix it with other metals

Our drinking water has plenty of minerals and chemicals

We eat them! (Do we eat pure salt?...ew)Medicine – mix different chemicals in one pill

to ease multiple symptoms (cough, fever, aches, pain, etc)

Mixtures gone wrongBuildings collapse because steel is mixed incorrectlyAdults and children have been killed when the wrong

medications have been mixed togetherMany people die from illegal drug use because the

drugs are mixed with other chemicals:Lithium (from batteries)Paint thinnerEtherLyeAnti-freezeBattery acid

In order to properly use mixtures, we need to know what they are and what they’re made of!

What are we doing today?Book NotesUse the sections from the book to find key

vocabulary that we will be using.Use Cornell format!

main topics on the leftvocab words on the right

20 minutes to get the definitions down!Then we’ll go over any missing information

at the end of class.

Solubility VocabularyMixture: A combination of two or

more pure substances in which each substance retains its individual properties

Chrome + Iron = STEEL

Salt + H2O = Ocean

Two Types of MixturesHeterogeneous:

mixture that does not blend smoothly throughout and in which the individual substances remain distinct

Homogeneous: mixture that has a constant composition throughout

Heterogeneous MixturesSuspension: mixture

with particles that settle out when left undisturbed (unmoved)

Colloid: mixture of particles between 1 nm and 1000 nm that DO NOT SETTLE OUT

Homogeneous MixturesSolvent: the

substance that dissolves another substance: the most plentiful substance in a solution

Solute: the substance that dissolves

Solution: a mixture of a solute dissolved in a solvent

+ =

Solid in Liquid SolutionsSoluble: word to describe

a substance that dissolves in a solvent

Sugar is soluble in water

Miscible: when two liquids are soluble in each other

Vinegar and water are miscible

Insoluble: A substance that does not dissolve in a solvent

Sand is insoluble in water

Immiscible: when two liquids separate after being mixed together

Oil and water are immiscible

Factors that Affect SolvationAgitation:

stirring and shaking allow more collisions between solvent and solute particles

Example: salt dissolves faster when you stir it

Surface Area: increases contact between particles and solvent – more collisions

Example: a teaspoon of granulated sugar dissolves faster than a sugar cube

Temperature: molecules move faster and solvent and solute collide more

Example: sugar dissolves faster in hot water than cold water