Lesson 8 - Mixtures (1) PDF

Mixture s  Objectives Recognize what are mixtures Figure out the types of mixtures Learn methods of separating mixtures  What is a mixture ? Observe the pictures and write your definition of a mixture from what you see in your note book  A mixture is A matter t...

Mixture s  Objectives Recognize what are mixtures Figure out the types of mixtures Learn methods of separating mixtures  What is a mixture ? Observe the pictures and write your definition of a mixture from what you see in your note book  A mixture is A matter that can vary in composition  What are the types of mixtures ? Watch the video and write down the types of mixtures in your note book What are the types of mixtures ? Heterogenous: A type of mixture in which the substances are not evenly mixed Homogenous: A type of mixtures in which the individual substance are evenly mixed Homogenous = solution Solute Solvent Solution Heterogenous Homogenous mixture mixture Heterogenous Put in groups Homogenous mixture mixture Compare between homogenous and heterogenous mixtures and give examples for each (make a poster 10 Watch the video and record as many separation methods as possible  Separating mixtures 1) Mechanical Separation (often by hand) takes advantage of physical properties such as color and shape. Separating mixtures A screen or paper lets the Vaporizing a liquid and liquid particles through, but leaving the dissolved traps the solid particles. solid(s) behind. Used to separate salt solutions. Separating mixtures Magnetic Separation is a piece of laboratory glassware takes advantage of the used in liquid-liquid extractions to separate (partition) the components physical property of of a mixture into two immiscible magnetism. solvent phases of different densities  Separating mixtures Distillation: The separation of a mixture of liquids based on the physical property of boiling point.  Homework Create a mixture of any type and apply a way to separate it – document your work and process with  Activity (separating mixtures ) How can you separate the following mixtures? (5-mins)  Burning question Remove the iron by magnet Add water to dissolve the salt Filter to separate the salt from the sand  What is the difference ? Which of them is a compound? Which of them is chemically bonded together ? Which of them I can separate easily ? Is “ salad” a compound?  What is a mixture ? A matter that can vary in composition The substance that consists of the same type of atom The substance that contains two or more different atoms chemically connected together