Aim: What is a solution?.

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Presentation transcript:

Aim: What is a solution?

Describe the characteristics and the parts of a solution Objectives Describe the characteristics and the parts of a solution

Dissolve … Solution …Soluble Insoluble …Solute…Solvent Acid Rain Vocabulary Dissolve … Solution …Soluble Insoluble …Solute…Solvent Acid Rain

What Happens … when you add sand to water Can you still detect the sand particles Is it easy to separate the sand from the water How would you do that

What Happens … when you add salt to water Can you still detect the salt particles Is it easy to separate the sand from the water How would you do that

What's The Difference … when you add salt to water The Salt dissolves in the water. Mixing Salt and Water is called a solution.

Types of Solutions … Most Common Types Solid into Water … Salt or Sugar Gas into Water … Club Soda Liquid into Liquid …80% alcohol

Definitions A pure mixture contains two or more substances that have been mixed together but not chemically combined A solution is mixture where one substance is evenly mixed into another substance

The solvent does the dissolving (water) Solutions Have Parts The solute is the substance that is dissolved into the other substance (salt) The solvent does the dissolving (water) Something which easily dissolves is called ? What do you call something that does not easily dissolve?

Not all solutes are soluble in all solvents! Examples Salt is very soluble Sand is not Sugar is very soluble Copper is not Not all solutes are soluble in all solvents!

Water is the Universal Solvent Remember that phrase Water will dissolve almost anything Even Rock ! Over millions of years ! Water dissolve pollutants in the air to form acids which cause Acid Rain. Acid Rain destroys forest, lakes, statues

Its summertime: What is wrong

The statue has been corroded by acid rain Statue over castle in Germany, photographed in 1908 (left) and again in 1968 (right). The statue has been corroded by acid rain