CHEMICAL

UNDERSTANDING MATERIALS

MATTER is anything that has mass and occupies space.
While the mass is a measure of the amount, the value is not influenced by
gravity so that the mass of the same everywhere.
properties of matter
influence form type volume
sample pressure
Gas followed suit rooms large volumes of air space
Liquid without certain specific forms of water, besin
Certain specific solid zero salt, sugar

1. EXTENSIVE properties are properties that depend on the amount of the substance.
example: weight, volume, energy content.

2. INTENSIVE properties are properties that do not depend on the number of substances.
properties are divided into two, namely:

a. Physical properties are properties that have nothing to do with the formation of a new substance.
example: boiling point, melting point, freezing point, density, solubility, odor, color,
magnetism, density, refractive index, and others.
b. Chemical properties are properties that have to do with the formation of a new substance.
example: density, keterbakaran, stability, ionization, perkaratan,
decay, weathering, fermentation, assimilation and others.

Changes in Matter
1. Physical changes are changes to the materials that do not produce new substances,
but it only happens perbahan physical properties and easy on the back.

example:
 ice melts
 clouds into rain
 wax melts
 sugar dissolved in water

2. Chemical changes are material changes that produce new substances,
and it is difficult to return to its original shape.
example:
o rice into flour
o iron into knives
o trees into tables and chairs
classification of matter

1. element
is the single most simple substances, which can not be described chemically into other substances.
Sifst metals non-metals properties

1. generally solid except for mercury
yabg liquid. 1.umumnya solid and gas, except
bromine which is a liquid
2.Penghantar heat and electricity. 2.tidak conduct heat and electricity
except carbon graphite.
3.Mengkilap 3.tidak shiny, except diamonds
4.dapat forged and stretched. 4.tidak malleable and fragile.
5.massa kind of big. 5.massa kind of small.

2. compound
is a substance formed from a combination of several elements and can be broken down again into the elements
pembentuknyadengan the chemical reaction.
example:
Compounds constituent elements
Water H, O
Sugar C, H, O
limestone Ca, C, O
sand Si, O
Urea C, O, N, H

3. Mix
is gabungandaridua or more material by comparison uncertain.
a. Homogeneous Mixture
is a mixture of the same type, does not have the interface between components.
b. Heterogeneous Mixture
is a mix between the components are still there the boundary,
so that each component can still distinguish different.