chapter 10 :foundations of chemistry lesson 1: classifying ... · substance . is a matter with a...

Matter

Anything that has mass and takes up space . Also

things we cannot see

Example: Water , tree and air

* Chapter 10 :Foundations of chemistry

Lesson 1: classifying matter

Objective: Observe how does the classification of

matter depends on atoms

Atom Small particles that is the building block of matter

Matter around you ,including all solids,liquids and gases





Substance . Is a matter with a composition that is always the same

. Always contains the same kinds of atoms in the same combination





Type of Substances:

Elements

Compound





Elements: Substances made of only one kind of atom

All atoms of an element are alike,but atoms of one element are different from atoms of other elements

HAS ONE TYPE OF ATOM

* Chapter 10 :Foundation of chemistry




Compound: Substances made of two or more elements that are chemically joined in a specific combination

HAS ONE TYPE OF PARTICLE


Lesson 1: Classifying Matter



Mixture: 1- Is a matter that can vary in composition.

2- It is made of two or more substances that are blended but are

not chemically bonded





Example of Mixtures:






Lesson 1:classifying matter



Types of Mixture:

1- Heterogeneous: mixture in which the substances are not evenly mixed(visible differences between substances) Mixed of Mixed of different minerals

Raising, nuts,pretzels from which it is made

* Chapter 10 : Foundation of chemistry




Types of Mixture: 2- Homogeneous: mixture in which two or more substances are evenly mixed(No visible differences between substances)

Mixed of Mixed of methane, ethane,

Solid copper and solid zinc and other gases


Lesson 2: Physical properties

Objective: Identify physical properties of a matter

Physical properties: Is a characteristic of matter that you can

observe or measure without changing the

identity of a matter

* Chapter 10 :Matter and Atoms



Examples of Physical properties:

Mass: the amount of matter in an object

Conductivity: The ability of matter to conduct,or carry electricity or heat

Volume: The amount of space something occupies

Boiling / Melting point: The temperature at which a material changes state

* Chapter 10 :Matter and Atoms



Examples of Physical properties:

State of matter: whether something is a solid,liquid or a gas

Density: The amount of mass per unit of volume

Solubility: The ability of one substance o dissolve in another

Magnetism: Attractive force for some metals, especially iron


Lesson 3: Physical changes

Objective: Identify how matter changes without loosing

their identity

Physical changes: Is a change in size ,shape, form, or state of

matter in which the matter´s identity stays

the same.



Objective: Identify how matter changes without loosing

their identity

Examples of changes in size and shape:

1- Chewing food : This change in size helps make food easier

to digest. You are breaking it into smaller pieces.

2- Pouring juice: When you pour juice from a

bottle into a glass. The liquid changes the shape.



Objective:Identify how matter changes without loosing

their identity

Examples of changes in state and dissolving:

3- Change in state of matter : When ice melts or the liquid

is heated . Adding thermal energy (from solid to liquid) and

removing thermal energy (from liquid to solid)

Thermal energy means amount of energy absorbed by a body.

4- Dissolving: When you added salt to the water of the

aquarium.


Lesson 4: Chemical properties and changes

Objective:Identify the type of matter that can change

chemically

Chemical properties:

Is a characteristic of matter that can be observed as it changes to a different type of matter. The ability of a susbtance to burn

Example:

The paper can burn and change into another substances(ashes).



Objective:Identify how to change a matter into another

by changing its identity

Chemical changes :

Is a change in matter in which the substances that

make up the matter change into other subsatnces

with new physical and chemical properties.

Example:

When iron undergoes a chemical change with

oxygen,rust form.


Lesson4 : Chemical properties and changes

Objective: Identify how to change a matter into another by

changing its identity

Some signs of Chemical change :

Bubbles Energy change

Odor change Color change



Objective: Identify how to change a matter into another

by changing its identity

Signs of chemical change :

It is important to know that these signs do not

always mean a chemical reaction change ocurred.

Example: When we heat water in the stove the

bubbles develop but the water is not changing

chemically but physically .

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