Physical and Chemical Properties and Changes. Untamed Video 2.0 Answer questions in Cornell Notes:...

Physical and Physical and Chemical Chemical

Properties and Properties and ChangesChanges

Untamed Video 2.0Untamed Video 2.0

Answer questions in Cornell Notes:Answer questions in Cornell Notes:► What type of change occurs when the tires are shredded to be used in new products?

►How do you know that treating tires with microwaves causes a chemical change?

Mapping it out!Mapping it out!

►What are some characteristics of physical changes?

►Does the identity of a substance change with a physical change?

►How does a chemical change affect the identity of a substance?

►Create a Thinking Map or Concept Map regarding Physical and Chemical Properties and Changes?

CarousellingCarouselling

►Procedure: ►The student will work with a partner/group to

answer questions on chart paper that is placed around the room. Each group responds to the material assigned and then rotates around the next chart paper to respond using their designated group color. The group can add more information and/or question another group’s response by drawing a question mark next to the information in question.

Vocabulary To KnowVocabulary To Know

►Chemical change►Chemical property►Conservation of mass►Physical change►Physical property

PropertyProperty►Is a Is a

description of description of an objectan object

The tree is TALLThe tree is GREEN

If struck by lighting, the tree could catch FIRE (BURN)

Physical PropertiesPhysical Properties

► Are observed by the use of the Are observed by the use of the and can be and can be

determined without destroying the determined without destroying the object. object.

► Ex. colorEx. color

fivesenses

Examples of Physical Examples of Physical PropertiesProperties

Color

Smell

Taste

HardnessState of MatterBoiling, Freezing, or Melting Point

Examples of Physical Examples of Physical PropertiesProperties

Density

Mass

Volume

Malleability (the ability to be molded)Solubility (the ability to be dissolved)

Chemical PropertiesChemical Properties

► Are determined by a Are determined by a substance’s ability to substance’s ability to

with other substances.with other substances.► Original substance is changed Original substance is changed

in observing a chemical in observing a chemical property. property.

► Ex. Iron rusting Ex. Iron rusting

react

Examples of Chemical Examples of Chemical PropertiesProperties

•The ability to react with

-

-

-

-

•The ability to react with

•The ability to catch fire ()

air

rust

tarnishcorrode

rot

water/acids

flammability

Physical or Chemical Physical or Chemical Property?Property?

► Ability of gun Ability of gun powder and fire to powder and fire to explode.explode.

Chemical Property

Physical or Chemical Physical or Chemical Property?Property?

► The color of a sunset.The color of a sunset.

Physical Property

Physical or Chemical Physical or Chemical Property?Property?

► The ability of a The ability of a nail to rust.nail to rust.

Chemical Property

Physical or Chemical Physical or Chemical Property?Property?

► The shape of a The shape of a leaf.leaf.

Physical Property

Physical or Chemical Physical or Chemical Property?Property?

► The ability of The ability of wood to burn.wood to burn.

Chemical Property

Physical or Chemical Physical or Chemical Property?Property?

► The hardness of a The hardness of a diamond.diamond.

Physical Property

Physical or Chemical Physical or Chemical Property?Property?

► The volume of The volume of your coke.your coke.

Physical Property

Physical or Chemical Physical or Chemical Property?Property?

► The mass of two camels. The mass of two camels.

Physical Property

Physical ChangesPhysical Changes► In a physical change, the In a physical change, the

original substance still exists, original substance still exists, it has only changed form it has only changed form

____ new substances are ____ new substances are formed.formed.No

Examples of Physical Examples of Physical ChangesChanges

► Change in size, Change in size, shape, or colorshape, or color

► Pencil shavingsPencil shavings► Torn PaperTorn Paper► Crushed iceCrushed ice► Sugar dissolved in Sugar dissolved in

waterwater► Painting a wallPainting a wall

Chemical ChangesChemical Changes► a change that a change that

occurs that occurs that the the

of a substance to of a substance to change; something change; something

is formed. is formed.

causesidentity

new

Evidence of Chemical Change

•New ________appears

•Bubbbles or ________

•Precipitate forms (____ material)

•_____ is produced

•______ is produced

•______ is given off

•Difficult or impossible to __________

color

fizzing

solid

reverse

Heat

Light

Sound

Other ExamplesOther Examples►Wood burningWood burning►Metal rustingMetal rusting►Food digestingFood digesting►Gasoline burningGasoline burning►Cake bakingCake baking

Physical or Chemical Physical or Chemical Change?Change?

►Water Water evaporates from evaporates from the ocean.the ocean.

Physical or Chemical Physical or Chemical Change?Change?

►The yolk of an The yolk of an egg, which egg, which contains sulfur, contains sulfur, causes tarnish causes tarnish to form on to form on silver.silver.

Physical or Chemical Physical or Chemical Change?Change?

►The ice on a lake The ice on a lake melts to become melts to become water in the water in the lake.lake.

Physical or Chemical Physical or Chemical Change?Change?

►Charcoal in a fire Charcoal in a fire turns to ash turns to ash after several after several hours.hours.

Physical or Chemical Physical or Chemical Change?Change?

►A pencil is A pencil is sharpened in a sharpened in a pencil pencil sharpener, sharpener, leaving behind leaving behind shavings.shavings.

Physical or Chemical Physical or Chemical Change?Change?

►A battery makes A battery makes electricity to electricity to turn on a turn on a flashlight.flashlight.

Physical or Chemical Physical or Chemical Change?Change?

►A bicycle rusts when left in the rain.A bicycle rusts when left in the rain.

Physical or Chemical Physical or Chemical Change?Change?

►A shirt is A shirt is accidentally torn accidentally torn in the washing in the washing machine.machine.

Physical or Chemical Physical or Chemical Change?Change?

►A log is split in A log is split in two by an axe.two by an axe.

Physical or Chemical?Physical or Chemical?

Write down your answers on Write down your answers on the Exit Ticket.the Exit Ticket.

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