Friday, August 27,2011.pptx

Friday, August 27,2011.pptx - Define Matter M3 Explain why...

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Define Matter
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M3: Explain why chemists are interested in a submicroscopic description of matter. M4: Differentiate among the three physical states of matter. M5: Contrast mixtures and pure substances.
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The Atomic Level Scientists need to consider the atomic level of interaction, often called submicroscopic . Solid Liquid Gas NOTE TAKING
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/cw/au_sch_whalley_sf1_1/int/matter.html _whalley_sf1_1/int/2_slg.html Animations
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Microscopic view of a gas. Microscopic view of a liquid. Microscopic view of a solid. True or False? Steam is a gas. States of Matter NOTE TAKING
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Microscopic view of a gas. Microscopic view of a liquid. Microscopic view of a solid. Gas -naturally in the gas state Vapor gaseous state of something that is normally a liquid or solid NOTE TAKING
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Shape Volume Compressible? Solid Liquid Gas Complete the following tabl NOTE TAKING
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Shape Volume Compressible? Solid definite definite NO Liquid Gas NOTE TAKING
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Shape Volume Compressible? Solid definite definite NO Liquid Fills bottom of container Definite Basically no Gas NOTE TAKING
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Shape Volume Compressible? Solid definite definite NO Liquid Fills bottom of container Definite Basically no Gas Fills entire container Fills volume of container VERY! NOTE TAKING
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Chemistry the study of matter and the changes it undergoes. Vocabulary What is matter?
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Pure Unvarying composition Impure Random composition
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Pure Unvarying composition Impure Random composition
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P u r e S u b s t a n c e s M i x t u r e s C l a s s i fi c a t i o n o f M a t t e r
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Ex. H 2 O Ex. H 2 Ex. H NOTE TAKING A t o m s - s m a l l e s t p a r t i c l e w / p r o p e r t i e s o f e l e m e n t E l e m e n t s - m a d e u p o f o n l y 1 t y p e o f a t o m C o m p o u n d s - 2 o r m o r e e l e m e n t s C h e m i c a l l y b o n d e d - f i x e d p r o p o r t i o n s P u r e S u b s t a n c e s - U n i f o r m & D e f i n i t e c o m p o s i t i o n & c a n ' t b e s e p a r a t e d b y p h y s i c a l m e a n s N o T y n d a l l e f f e c t
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e x . c o f f e e g r o u n d s S u s p e n s i o n - l a r g e p a r t i c l e s - s e t t l e o r f i l t e r o u t e x . m i l k C o l l o i d - s m a l l p a r t i c l e s - d o n o t s e t t l e o u t H e t e r o g e n e o u s M i x t u r e s - n o t u n i f o r m t h r o u g h o u t - e x h i b i t T y n d a l l E f f e c t e x . s a l t w a t e r " S o l u t i o n " - v e r y s m a l l p a r t i c l e s H o m o g e n e o u s M i x t u r e - u n i f o r m m i x - d o e s n o t s c a t t e r l i g h t M i x t u r e s - P h y s i c a l c o m b i n a t i o n o f 2 o r m o r e s u b s t a n c e s - c a n b e s e p a r a t e d b y p h y s i c a l m e a n s
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Mixtures of Matter Mixtures retain individual properties of the components Ex – saltwater – still salty & watery!
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