Year 7 Chemistry – Solutions What is a SOLUTION? ___________________________________________________________ ______________________________________________________________________________ Provide 2 everyday examples of forming solutions ______________________________________________________________________________ Match the following terms with the correct definition and example by drawing a line: Solute The LIQUID substance that does the dissolving Solvent Solution The result of mixing a solid and a liquid The SOLID substance that is dissolved Coffee Powder Coffee Milk Write a definition for the term SOLUBLE ______________________________________________________________________________ ______________________________________________________________________________ Write a definition for the term INSOLUBLE ______________________________________________________________________________ ______________________________________________________________________________ A variety of different substances are mixed with a water solvent, the observations were recorded below: Fill in the table by listing if the substances are soluble or not! Substance added to water Observation Salt Immediately disappeared Dirt Formed a cloudy suspension at bottom of beaker Sugar granules settled to bottom, but dissolved overtime Metal sunk to the bottom of the beaker, did not change Oil formed a layer on top of the water, did not mix Mixed with water to form slightly yellow liquid Sugar Metal Oil Lemon juice Is it soluble? (Yes/No) Why did you list the previous substances as soluble? ______________________________________________________________________________ ______________________________________________________________________________ Why did you list the previous substances as insoluble? ______________________________________________________________________________ ______________________________________________________________________________ When dirt is mixed with water it forms something called a SUSPENSION! What is a suspension? _____________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ Explain why suspensions typically settle to the bottom of a container over-time! ______________________________________________________________________________ ______________________________________________________________________________ How would you tell the difference between a solution and a suspension? ______________________________________________________________________________ ______________________________________________________________________________ Fill in the following table, identifying what solvents and solutes are used in these solutions! Find an everyday use for the following solvents! a) Water ___________________________________________________________________ b) Ethanol __________________________________________________________________ c) Acetone _________________________________________________________________
