THE SIMPLE DISTILLATION

Is in use for separating a dissolution formed by two liquids depending on her different boiling-points.

When one makes boil the dissolution contained in the flask, the volatile solvent that has a minor boiling-point, it evaporates and leaves in the flask a residue of soluto not volatile.

To gather the solvent like that evaporated, one makes him happen for a condenser in the one that circulates cold water. There there becomes condensed the steam, which falls down in a glass.

Physics and Chemistry

Physics is the science of matter and its motion, as well as space and time the science that deals with concepts such as force, energy, mass and charge. As an experimental science, its goal is to understand the natural world.

Chemistry is the science concerned with the composition, structure and properties of matter, as well as the changes it undergoes during chemical reactions. Chemistry is a physical science related to studies of various atoms, molecules and crystals.

filtration

Filtration is the process of removing suspended solids from water by passing the water
through a permeable fabric or porous bed of materials. Groundwater is naturally filtered
as it flows through porous layers of soil. However, surface water and groundwater under
the influence of surface water is subject to contamination from many sources. Some
contaminants pose a threat to human health, and filtration is one of the oldest and
simplest methods of removing them. Federal and state laws require many water systems
to filter their water. Filtration methods include slow and rapid sand filtration, diatomaceous
earth filtration, direct filtration, packaged filtration, membrane filtration, and
cartridge filtration.

Helium

Helium is one of the so-called noble gases. Helium gas is unreactive, colourless, and odourless. Helium is available in pressurised tanks.
Elemental helium is a colourless odourless monoatomic gas. Helium is the second most abundant element in the universe after hydrogen. α particles are doubly ionised helium atoms, He2+.
Helium is used in lighter than air balloons and while heavier than hydrogen, is far safer since helium does not burn. Speaking after breathing an atmosphere rich in helium results in a squeaky voice (don't try it!).

THE OIL

The oil is a fossil fuel of black color and oily aspect that impregnates certain rocks.Create it does million years from organic matter contained in the remains of small animals, algae and other beings who died in the sea, they settled in the fund and, little by little, they were covering of a dense cap of materials. For lack of osigeno did that they were increasing, multiplying in number, the anaerobic bacteria that make ferment the organic matter.

The conditions that favor the creation of the oil are:
- Slightly deep and rich seas in nutrients.
- Fluvial contributions.
- Little water movement in the fund.

The majority of the oil is in the stock exchanges impregnating rocks. These finds are to thousands of meters of depth, because of it to extract the oil it is necessary to make a well and take it up to the surface.

Types of food

• Food energy: they are a source of energy for our bodies to function and do their vital functions. These are foods with glícidos and lipids. These foods are bread, chocolate, grease ...



• Food plastics or trainers: They are required to form cells, tissues and organs. They are essential for nutrition and have many proteins. These foods are fish, meat, yogurth ...

• Food regulators and protectors: they are essential to our body can use correctly other foods have many vitamins, minerals and water. These foods are fruits and vegetables.

Practise with Robbie Williams