Making mixtures of solids and liquids

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  • 1. Making mixtures of solids and liquidsAim: To make mixtures of solids and liquidsEquipment: 4 test tubes, test tube rack, salt, oil, sugar, copper sulfateMethod:1. Collect all equipment.2. For the first test tube, half fill the test tube with water and add a pinch of salt. Put yourthumb over the opening of the test tube and shake it to thoroughly mix the salt in thewater.3. Did the salt ‘disappear’ into the water? Record the results in the table below.4. Repeat steps 2 and 3 for the rest of the test tubes and substances.5. Clean up and put your equipment away.Results: Substance Did it ‘disappear’ in water? salt oil sugar copper sulfateConclusion:……………………………………………………………………………………………………………………………………………………………………………………………………………………………………
  • 2. Solutions, solutes and solventsWhen a solid ‘disappears’ into a liquid, we say the solid has dissolved into the liquid.The solid that does the ‘disappearing’ is called the solute and the liquid is called thesolvent. A mixture of a solute and a solvent is called a solution.If the solid doesn’t dissolve into the liquid, the mixture is called a suspension.Here is your results table again. This time you need to identify the solute and the solvent. Substance Did it dissolve What is the What is the Is this mixture in water? solute? solvent? a solution or a suspension? salt flour copper sulfate sand sugarComplete these sentencesWhen a solid ‘disappears’ into a liquid, the solid has ……………………When a solid dissolves into a liquid the mixture is called a …………………………………When a solid doesn’t dissolve into a liquid the mixture is called a …………………………In a solution, the solid that has dissolved is called the …………………………..In a solution, the liquid that dissolves the solid is called the …………………………