Classification of matter

homogeneous

All particles in a sample are the same

heterogeneous

All particles in a sample are not alike

Element

Simplistic form of matter

Compound

two or more elements that are CHEMICALLY COMBINED to form one new substance.

Mixture

2 or more particles combined physically (Not chemically)

Substance

Anything with chemical make-up and can be written as a formula. Also known as a pure - (100%) substance.

Indications of a chemical change

-A precipitate is formed

- a NEW solid, liquid or gas will be produced that was not there before. This is not a phase change. Could see bubbles (gas), A solid or liquid could settle out

-Heat is produced or removed

-The temperature will increase or decrease

-Color Change

-An UNEXPECTED change in color or the substance

-Light is produced

-Item glows or is giving off light.

Phase Change Point

the temperature where something goes from one state (solid, liquid, gas) to another

Distillation

A process that separates the substances in a solution based on their boiling points - cleans water

Filter/sieve

A tool used to separate different size solids from one another

Filtration

A process that separates mixtures based on the size of their particles.

Precipitate

A solid that forms from a solution during a chemical reaction.

Color Change

A change in the color, can indicate a chemical change.

Physical properties

- color

- size

- density

- texture

- shape

- flammability

- solubility - ability to dissolve

- phase change point

- magnetism

Smog

air pollution by a mixture of smoke and fog - you usually see in the morning

chemically combined

compound

physically combined

Mixture

Synthesis

Two or more reactants combine to form one product

Decomposition

One reactant is broken down into two or more products

Single Replacement

a compound reacts with an element to form a new compound and a different element

double replacement

two compounds react to form two different compounds

Combustion

A fuel is combined with oxygen to produce carbon dioxide and water

Law of Conservation of Matter and energy

When the universe was created, all the matter and energy that will avert be was created.

Solution

Once something dissolves we have a solution - Solution = homogeneous mixture

Solubility

Ability to dissolve

When chemically changes create compounds, what happens ro the physical properties?

THEY DO NOT STAY THE SAME

When physical changes create mixtures, what happens ro the physical properties?

They stay and mix.

Are mixtures hetero or homogeneous?

HETEROGENEOUS — BUT may look homogeneous. This is called a homogeneous mixture

Substances are ...

Homogeneous

What does unexpected mean

There is no reason for it

What chemical are mothball made of?

Napholene

What is the Mickey Mouse Molecule?

H20 or Water

Water

H2O

Carbon Dioxide

CO2

Sugar

C6H12O6

Hydrogen peroxide

H2O2

Table salt

NaCl

Hydrochloric acid

HCl

Sulfuric acid

H2SO4

Alcohol

CH3OH

What are the steps to physically separate a mixture

1.) - Identify if it is a mixture

2.) - Identify of Homo of Heterogeneous mixture

3.) - Separate them by physical properties

Elements

Made up of only one kind of atom

Cannot be broken down by chemical means*

Has the same properties atoms making it up

Has same properties throughout

Compounds

Made of multiple kinds of atoms

Can be broken down through chemical means

Has different properties from elements making it up

Has same properties throughout (homogeneous)

Mixtures

Made up of more that one kind of particles

Can be separated by physical means**

Has same properties as substance making it up

Has different properties throughout.

What is a balanced equation?

each side of the equation has the same number of atoms of each element and mass is conserved

Amonia

NH3

Ugly compound — Iron Oxide

4 FeO

YAY YOURE ALL DONE !!!!

And remember to know all past elements 🥲