chemical & physical properties of matter

Download Chemical & Physical Properties of Matter

Post on 23-Feb-2016

69 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

Chemical & Physical Properties of Matter. Chemical Properties. Characteristics that are observed ONLY when a substance changes into a different substance. Chemical Properties. Types of Chemical Properties: Combustible/flammable : able to burn Examples & Facts: - PowerPoint PPT Presentation

TRANSCRIPT

Chemical & Physical Properties

Chemical & Physical Properties of MatterChemical PropertiesCharacteristics that are observed ONLY when a substance changes into a different substance

Chemical PropertiesTypes of Chemical Properties:Combustible/flammable: able to burn

Examples & Facts:all chemicals come with a label that identifies their level of flammability

Chemical PropertiesTypes of Chemical Properties:Combustible/flammable: able to burnhttp://youtu.be/EZ3JT2nWfMA

Examples & Facts:oxygen & hydrogen are very flammable gasescarbon dioxide is not a very flammable gas

Hay Bale combustinghttp://www.youtube.com/watch?v=zRNCrHqD0zEStop at 35 secondsChemical PropertiesTypes of Chemical Properties:Reactivity: how easily a substance reacts with another substancehttp://youtu.be/sS3cIK9jlB8

Examples & Facts:many chemicals react with water or oxygenall chemicals come with a label that identifies their level of reactivity

Chemical PropertiesTypes of Chemical Properties:Reactivity: how easily a substance reacts with another substance

Examples & Facts:corrosion: slow reaction & wearing away of metals (rusting, tarnishing)

Examples of Chemical Changes

Physical PropertiesCharacteristics that can be observed without changing the substance into something else

Physical PropertiesTypes of Physical Properties:colortextureodortastehardnessmagneticboiling, melting, & freezing points

Physical PropertiesTypes of Physical Properties:Luster:shininess or dullness

Examples & Facts:most metals are shinydiamonds have a lot of lustermany minerals are dull

Physical PropertiesTypes of Physical Properties:Brittleness:how easily a substance breaks into pieces

Examples & Facts:very brittle substances may crumble or break with very little force

Physical PropertiesTypes of Physical Properties:Brittleness:how easily a substance breaks into pieces

Examples & Facts:many rocks & minerals are brittlechalk is brittle because it crumbles easily

Physical PropertiesTypes of Physical Properties:Malleable:can be pounded into shapes

Examples & Facts:aluminum is very malleableclay is also malleablesubstances that are malleable are usually not very brittle

Properties Songhttp://www.youtube.com/watch?v=uJOGy0dgmUU

Physical PropertiesTypes of Physical Properties:Ductile:can be pulled out into a long wire

Examples & Facts:substances may be both malleable & ductilecopper is very malleable & ductilesubstances that are ductile are usually not very brittle

Physical PropertiesTypes of Physical Properties:Conductive:can transmit heat and/or electricity

Examples & Facts:a substance may conduct heat, electricity, neither, or bothmost metals are good conductors

Physical PropertiesTypes of Physical Properties:Conductive:can transmit heat and/or electricity

Examples & Facts:pots & pans are made out of metals that are good heat conductors

Physical PropertiesTypes of Physical Properties:Soluble:can be dissolved in a liquid

Examples & Facts:substances that are water-soluble will dissolve in watersalt & sugar are soluble in watersubstances that dont dissolve are insoluble

Overview of Physical & Chemical propertieshttp://youtu.be/oF0lN0jZYx0

http://www.youtube.com/watch?v=C4pQQQNwy30

Models are representations of objects or systems.

Models can be used for:Understanding somethingPredictingPicturing things in your mindExplain scientific theories

Physical Modelslook like the object they model.

Mathematical modelsMade up of mathematical equations and data

Conceptual modelsSystems of ideas.

Limitation of ModelsThey dont act exactly like the things they model or they may not look like the things they represent. Scale might be incorrect.What is wrong with this model?

Extra information on Chemical & Physical http://education-portal.com/academy/lesson/matter-physical-and-chemical-properties.html#transcriptJust watch from 1:50 to 4:20 on video

Recommended

View more >