Properties of Matter

Properties of Matter

Lesson 2

How are the properties and changes of
matter classified?

Focus Question

law of conservation of mass

chemical change

chemical property

distillation

physical change

physical property

New Vocabulary

boiling point: the temperature at which the
vapor pressure of the liquid is equal to the
external pressure acting on the surface of the
liquid

Review Vocabulary

What is the difference between rubber band and string?

What is the difference between wooden matchstick and wire?

•

Any characteristic of a material that you can
observe without changing the identity of the
substance is a physical property.

Physical Properties

Physical
properties

appearance

behavior

•

Appearance is a physical property that
includes color, shape, size, density, texture,
melting point, mass, volume, diameter and
boiling point.

Physical Properties (1. Appearance)

How would you describe a tennis ball?

Key Vocabulary:
•physical property

•physical change

Success Criteria:
Chapter: 4-M15 -CLASSIFICATION OF MATTER
lesson2– Properties of Matter
ALEF (

30-31-32-33

)

Textbook Page:

385-391
Date: -10- 2022

Objectives:

describe a tennis ball?

Appearance

Color : yellow
Shape: Sphere
diameter with a tape measure:
Mass:

Key Vocabulary:
•physical property

•physical change

Success Criteria:
Chapter: 4-M15 -CLASSIFICATION OF MATTER
lesson2– Properties of Matter
ALEF (

30-31-32-33

)

Textbook Page:

385-391
Date: -10- 2022

Objectives:

Behavior
describe the Iron?

Color : -------------------
Shape: -----------------------

Behavior:------------------------------

•

Some physical properties describe the behavior of a
material or a substance.

Physical Properties (2. Behavior)

iron

Gold

liquids

Attraction of a
magnet

pounded into thin
sheets

Viscosity, the
resistance to flow

•

Mixtures, such as iron fillings and sand, can be
separated by the physical properties of iron and sand.

Separating Mixtures using physical properties

Separating Mixtures using physical properties

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Physical Change

Multiple Choice

Which of the following is evidence that a physical change has occurred?

• broken glass

• formation of bubbles

• rust

• formation of a solid precipitate

•

Freezing, boiling, evaporating, and condensing are
examples of physical changes.

•

A change in size, shape, or state of matter in which the
identity of the substance remains the same is called a
physical change.

•

Physical properties can be used to identify unknown
substances.

Physical Change

Multiple Choice

How would you describe the process of evaporating fresh water from seawater?

• chemical change

• physical change

• chemical property

• physical property

•

Distillation can
separate liquids from
solids dissolved in
them. The liquid is
heated until it
evaporates and moves
up the column.
Then, as it touches the
water-cooled surface
of the condenser, it
becomes a liquid again.

Using Physical Change to separate Mixture

Key Vocabulary:
•physical property
•physical change
•distillation

Success Criteria:

Chapter: 4-M15 -CLASSIFICATION OF MATTER
lesson2– Properties of Matter
ALEF (

30-31-32-33

)

Textbook Page:

385-391
Date: -10- 2022

Objectives:

Using physical properties to separate mixtures

. Observe
Where would you expect to find the
solid material left behind in the
distillation process?

Multiple Choice

This involves using a strainer or a big screen to separate the components of solid mixtures.

• chromatography

• distillation

• sieving

• filtration

Multiple Choice

What method of separation would work best to separate water and sand?

• chromatography

• distillation

• sieving

• filtration

Multiple Choice

This method is used to separate metals from non metals.

• chromatography

• magnetism

• sieving

• filtration

Multiple Choice

Density (mass per unit volume): Chemical or Physical Property

• Chemical Property

• Physical Property

Multiple Choice

crushing

• Chemical Property

• Physical Property

Chemical Properties and Chemical Changes

​what the red sign means?

​why some medicines stored in dark botteles?

Chemical Properties and Chemical Changes

​The tendency of a substance to burn

​

Flammability ​

​medicines contain compounds that can chemically change if they are exposed to light

Multiple Choice

Which of these warnings refers to a chemical property of the material?

• fragile

• sharp object

• flammable

• shake well

•

Any characteristic of a material that you can observe
and produces one or more new substances is a
chemical property.

•

The tendency of a substance to burn, called its
flammability, is an example of a chemical property.

•

Flammability is a chemical property because burning
produces new substances.

Chemical Properties and Chemical Changes

Multiple Choice

Which is an example of a chemical change?

• boiling

• burning

• evaporation

• melting

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Success Criteria:

Chapter: 4-M15 -CLASSIFICATION OF MATTER
Lesson 2– Properties of Matter
ALEF (

30-31-32-33

)

Textbook Page:

385-391
Date: -10- 2022

Objectives:

Detecting Chemical

Change

Key Vocabulary:
•chemical property
•chemical change
•law of conservation of
mass

•A change of one substance to another is a chemical change.

•The smell of rotten eggs
•the formation of rust on bikes and car fenders are signs that a chemical
change has taken place.

Multiple Choice

Suppose you start to eat some potato chips from an open bag that you found in your locker and notice that they taste unpleasant. What process resulted in this unpleasant taste?

• chemical change

• physical change

• chemical property

• physical property

•

A change of one substance to another is a chemical
change.

•

The smell of rotten eggs and the formation of rust on
bikes and car fenders are signs that a chemical change
has taken place.

•

Indications of a possible chemical change include: odor
change, color change, gas produced, release of energy
(i.e., heat, light, sound), and the formation of a
precipitate.

Detecting Chemical Change

Detecting Chemical Change

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•

Earth’s surface undergoes
chemical and physical changes.

•

Rocks can split due to freezing
water and streams can cut hard
rock over time. These changes
are called physical weathering.

•

Limestone undergoes chemical
weathering when it reacts with
acidic water. This is an example
of a chemical change.

Weathering

Multiple Choice

 

_____________ weathering is the breaking down of rocks by chemical reactions.

• Chemical

• Physical

• Deposition

• Erosion

Multiple Choice

How do plants weather rocks?

• when roots grow into cracks of rocks and expand the rock

• when the plant moves water from the roots to the leaves

• ice wedging and wind abrasion

• animal burrowing and wind abrasion

Multiple Choice

What type of weathering is it when acid rain breaks down and changes the rock.

• chemical weathering 

• physical or mechanical weathering

• erosion

• Deposition

Weathering

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•

The law of conservation of mass states that the
mass of all substances that are present before a
chemical change, the reactants, equals the mass of
all the substances that remain after the change,
which are called the products.

The Conservation of Mass

64.14g

Multiple Choice

 

If reaction starts with 20g of reactants it should produce

• a total of 40g of products

• a total of 80 g of products

• a total of 10g of products

• a total of 20g of products

Multiple Choice

True or False

The mass of the reactants in a chemical equation must equal the mass of the products.

• True

• False