Chemistry week 1

I wanna leave this school.

The Matter

Anything that occupies space and has mass. Although there are many ways existing to describe and classify matter, chemists typically define them based on both physical characteristics and how they interact with another type of matter.

The Properties of Matter

Physical and Chemical properties

Physical Properties

concentrates on the external

characteristics of matter.

Chemical Properties

focuses on the internal

characteristics of matter.

Extensive Properties (physical property of matter)

vary

with the amount of the

substance and include mass,

weight, volume, length, etc.

Intensive Properties (physical property of matter)

not depend on the amount of

the substance and include

color, temperature, luster, etc.

The Properties of Matter

Chemical

Chemical properties include

acidity, basicity, reactivity,

toxicity, and flammability.

Pure Substances

Mixtures

The Classification

of Matter

Mixtures

can be categorized

into homogeneous and

heterogeneous.

Pure Substances

can be

separated into elements and

compounds.

solid, liquid, and gas

The phases of matter

Physical and Chemical changes in matter

The Changes in Matter

Physical Changes

the

substance retained itself

afterwards.

The change in which the

shape, size, or phase of the

matter changes, but the

substance is still essentially the

same.

Chemical Changes

the

substance changed and

produced another substance.

The other change where one

or more substances are

combined to produce a new

substance.

The Chemical Formula

The ___________ of a

substance is a symbolic

representation of its chemical

composition. It is a useful guide

to identify which elements are

present and their exact

proportionate number.

The Structure of the

Chemical Formula

The chemical formula entails

insight into the elements that

constitutes its molecules as well

as the ratio in which the atoms of

these elements combine to form

the compound.

The Methods of Separation

In most cases, the substances

in the environment are not in

their purest form. They are

composed of two (2) or more

substances and can come in

different forms. As such, several

methods of separation were

invented to segregate these

mixtures and remove unwanted

materials.

Evaporation

The mixture is poured into

the evaporating dish and gets

heated slowly using a Bunsen

burner.

Distillation

The mixture inside the

distillation flask is boiled up to

produce vapor or steam.

Filtration

The mixture is poured

through a funnel that is lined

with filter paper.

Chromatography

The mixture is spotted onto

the filter paper, which are then

placed in a container filled with

solvent.