Physical Properties and Glass Bending

8/14/2019 Physical Properties and Glass Bending

1/30

Matter & ItsMatter & Its

PropertiesPropertiesPhysical Properties &

Physical Changes


2/30


3/30

Substances

All matter consists of various substances.

Some exist alone; most are mixed together.

A substance is a unique sample of matter thathas specific properties associated with it.

Extensive Properties depend on the amount ofmatter present (mass, volume, amount of

energy) Intensive Properties do not depend on the

amount of matter present.


4/30

Compounds

Water is a molecule made of one oxygen atomand two hydrogen atoms (H

2O)

It has different properties

than either oxygen or

hydrogen.


5/30


6/30

States of matter

Solid - matter that can not flow and has definite

shape & volume.

Liquid - definite volume but takes the shape of its

container (flows).

Gas - a substance without definite volume or shape

and can flow. Expands to fill its container.

Vapor - a substance that is currently a gas but

normally is a liquid or solid at room temperature.


7/30

States of MatterStates of Matter

Solid

Liquid

Gas

DefiniteVolume?

YES

YES

NO

DefiniteShape?

YES

NO

NO

Temp.increase

Small

Expans.

Small

Expans.

Large

Expans.

Com-pressible?

NO

NO

YES


8/30

Physical Properties

Are consistent and unique with respect to any

single substance.

Can be measured and observed without

changing the actual substance into a new one.


9/30

Examples of physical properties are:

Please find your Dr. Bunsen Honeydew andbrainstorm as many physical properties as

you can think of.

Physical Properties


10/30

Physical Properties

Some examples of Physical Properties are: Electrical Conductivity

Heat Conductivity

Density Melting Point

Boiling Point

Index of Refraction

Malleability

Ductility

Specific Heat Color

Texture Shape Mass


11/30

Physical Changes

Throughout such changes, the substance

maintains the same identity!

A single substance cannot be broken down and

separated by physical means.

Mixtures however, can be separated into their

component substances on the basis of the

differing physical properties.


12/30

Physical Changes

Examples of physical changes:

Please find your Professor Frink and

brainstorm examples of physical changes.


13/30

Physical Changes

Examples of Physical Changes are:

Phase Changes (States): Solid, Liquid, Gas,

Plasma

Individual Separation of the Components of a

Mixture (Distillation, Filtration,

Chromatography)

Form or orientation of an object.


14/30

Liquid

Sublimation

Melting Vaporizati

on

Deposition

Condensation

Solid

Freezing

Gas

Phase Changes


15/30


16/30

GlassGlass

Bending!Bending!Where the silicon dioxide flows like,

well, silicon dioxide.


17/30

Glass Molecular Structure


18/30

Glass Bending Goals

1. Observe and work with the physical properties ofsilicon dioxide (glass) which is an amorphous

solid. In other words, it doesnt have any long

range order to the atoms and flows over time.Glass is actually a super cooled liquid and does not

have a rigid molecular arrangement.

2. Learn to polish the ends of a piece of glass tubing.3. Bend 3 sections of glass into the following shapes.

90angle, 60angle, G (for Gunn)


19/30

RelieRelie

ff


20/30

Ice Water!Ice Water!


21/30

SympathSympath

yy


22/30

Band Aids!Band Aids!


23/30

HypochondriaHypochondria


24/30

Burn Spray!


25/30

CoddlingCoddling


26/30

Nurses Passes!

Maybe someday youMaybe someday you


27/30

Maybe someday youMaybe someday youwill be the next Dalewill be the next Dale

Chihuly!Chihuly!


28/30


29/30


30/30

Documents

Physical Properties and Glass Bending