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PublishDylan Montgomery Modified over 8 years ago
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Oh My!
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In your groups think of all the matter you can One person from each group write them on the board In your groups again try to sort the ideas into reasonable groupings.
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Anything that has mass Composed of atoms
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PHYSICAL Describe characteristics of element or compound Ex.: ▪ Color ▪ Density ▪ Boiling point ▪ Melting point CHEMICAL Determine how the element or compound will react with others Ex. ▪ Combustibility ▪ Reaction with water ▪ Reaction with acids
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PHYSICAL Do not change the nature of the substance Cutting Bending Melting Freezing CHEMICAL Change from 1 substance to another Burning Cooking Evidence Water vapor (smoke) Other gases
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ELEMENTS Composed of only 1 type of atom May be diatomic 2 of same type of atom bonded together 7 sisters COMPOUNDS Composed of more than 1 type of atom Fixed ratios of elements
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Most things in nature Substances held together by physical forces Can be separated by physical means Types: Heterogeneous ▪ Visibly different substances or phases / states ▪ Trail mix, salad Homogeneous ▪ Uniform appearance and composition ▪ Kool-aid, sugar water
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Solution A type of homogeneous mixture One substance (solute) is dissolved in another (solvent) ▪ Ex. ▪ Solid in liquid: tea, coffee ▪ Solid in solid: brass, bronze ▪ Alloy – metal in metal ▪ Amalgams: special type of alloy; mercury + another metal
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SoluteSolventExample Liquid Vinegar (acetic acid in water) SolidLiquidSalt water GasLiquidSoft drinks (CO2 in water) LiquidGasWater in air SolidGasSmog Gas Air (oxygen, nitrogen, etc) Solid Bronze (alloy)
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Colloids Homogeneous mixtures Particles are of intermediate size ▪ Ex. – milk, fog Show Tyndall effect Emulsions Type of colloid made of oil and water ▪ Ex. – salad dressing
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Suspensions Heterogeneous mixtures Particles are large enough to settle out ▪ Sedimentation ▪ Ex. sand in water – solid in liquid aerosols – liquid in gas
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Create a concept map of matter Include examples
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Create a concept map of matter MatterPure substanceElementCompoundMixtureHomogeneousSolutionColloidHeterogeneousSuspension
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