Physical and Chemical Properties and Changes

Physical and

Chemical Properties

and Changes

Physical Properties

►
Are determined by the use of the

.

►
They are a

of an object.

five

senses

description

Examples of Physical Properties

Color

Smell

Taste

Hardness

State of Matter

Boiling, Freezing, or Melting Point

Examples of Physical Properties

Density

Mass

Volume

Malleability (the ability to be molded)

Solubility (the ability to be dissolved)

Chemical Properties

►
Are determined by a
substance’s ability
to

with other

substances.

react

Examples of Chemical Properties

•The ability to react with

-

-

-

-

•The ability to react with

•The ability to catch fire (

)

air

rust

tarnish

corrode

rot

water/acids

flammability

Physical or Chemical

Property?

►
Ability of gun
powder and fire to
explode.

Chemical
Property

Physical or Chemical

Property?

►
The color of a sunset.

Physical
Property

Physical or Chemical

Property?

►
The ability of a nail
to rust.

Chemical
Property

Physical or Chemical

Property?

►
The shape of a leaf.

Physical
Property

Physical or Chemical

Property?

►
The ability of wood
to burn.

Chemical
Property

Physical or Chemical

Property?

►
The hardness of a
diamond.

Physical
Property

Physical or Chemical

Property?

►
The volume of your
coke.

Physical
Property

Physical or Chemical

Property?

►
The mass of two camels.

Physical
Property

Physical Changes

►
a change that occurs

changing the

of the

substance.

►
____ new substances are formed.

without

identity

No

Examples of Physical

Changes

►
Change in size,
shape, or color

►
Pencil shavings

►
Torn Paper

►
Crushed ice

►
Sugar dissolved in
water

►
Painting a wall

Chemical Changes

►
a change that occurs
that

the

of a substance to
change; something

is formed.

►
New substances with

properties are

formed

causes

identity

new

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

Reactions with Acid

►
Vinegar + baking
soda = release of
Carbon Dioxide Gas

Reactions with Oxygen

►
OXIDATION

►
Iron + Oxygen = rust

Reactions with Electricity

►
Silver Plating

Reactions between

Substances

►
Sodium + chloride = salt

►
Silver + sulfer in the air = tarnish

Other Examples

► Wood burning

► Metal rusting

► Food digesting

► Gasoline burning

► Cake baking

Physical or Chemical

Change?

► Water

evaporates from
the ocean.

Physical or Chemical

Change?

► The yolk of an egg,

which contains
sulfur, causes
tarnish to form on
silver.

Physical or Chemical

Change?

► The ice on a lake

melts to become
water in the lake.

Physical or Chemical

Change?

► Charcoal in a fire

turns to ash after
several hours.

Physical or Chemical

Change?

► A pencil is

sharpened in a
pencil sharpener,
leaving behind
shavings.

Physical or Chemical

Change?

► A battery makes

electricity to turn
on a flashlight.

Physical or Chemical

Change?

► A bicycle rusts when left in the rain.

Physical or Chemical

Change?

► A shirt is

accidentally torn in
the washing
machine.

Physical or Chemical

Change?

► A log is split in two

by an axe.

Multiple Choice

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties

• chemical properties

Multiple Choice

Which type of property is the ability to conduct electricity?

• physical property

• chemical property

Multiple Choice

Properties that can be observed without changing the identity of the substance.

• Physical

• Chemical

Multiple Choice

Example for physical property

• odor

• burns in air

• reacts with water to create hydrogen gas

• rust

Multiple Choice

Which of the following is a sign that a chemical reaction has occurred?

• change in shape

• melting

• formation of a gas

• dissolving

Multiple Choice

Which of the following is NOT an example of a physical change?

• crumpled paper

• pencil sharpening

• shrunken clothing

• rust

Multiple Choice

A change where one or more new substances are created.

• Physical Change 

• Chemical Change 

Multiple Choice

Rust on an iron bar is an example of chemical change.

• True 

• False

Multiple Choice

Flammability is an example of what property?

• Chemical property

• Physical property