Side Effect Of Sugar Free Gold

Why say that the sun is life? CF No. 179

SCIENCE EASY ; ; No. 179

Chaler Author Maria Cristina.

Series Juguemos to why?

Why do we say that the sun is life?

The sun is life sentence we have heard repeatedly and may never wonder why? If it is actually true or just a social stereotype phrase emerged only pleasure that brings us exposure to its warm rays.

Remember Easy Science footnote No. 49 where he spoke of the need of vitamin D

This vitamin is involved

v In absorption of phosphorus (P) and calcium (Ca + +) in the intestine so that favors the growth of both bones and teeth.

v The immune system protection.

v in the regulation of calcium levels (Ca + +) that is essential for central nervous system and muscles working properly. Avoiding cramps and seizures.

Sunlight is the major source of this vitamin because it transforms a substance found under the skin (7 dehydrocholesterol) in pro-vitamin D3 and cholesterol ergo pro-vitamin D2 for both then through another chemical process are transformed into vitamin D.

So

sunlight promote the synthesis of this vitamin is so necessary for our life.
But it is important to note that no we should abuse it as permanent and prolonged exposure can damage the genome of the skin and cause cancer (melanoma).

care of the skin from the sun is essential to preserve our health

This why? still needs an answer

Let

remembering another note No. 158 Easy Science where we talked about the balance of our atmosphere gaseous general composition is given by

Nitrogen --- 78.03 --- % Oxygen
-------- 20, 99% carbon dioxide
----- 0, 03%
and other rare gases with water vapor

0.94% -----

is necessary that the atmospheric gases are kept in balance for good preservation of life, disruption of these percentages significantly detrimental to the biome.
Oxygen

Oxygen is an important gas for the biome of the planet. The animal kingdom is used in the process of respiration. Breathe in, absorbing oxygen carried by blood each cell of a living organism, so that becomes effective combustion of food and generate the energy needed to hold everything that involves life, from the maintenance of metabolism (chains of chemical reactions of the living organism) to all actions that a living being done throughout his life.

The plant kingdom expel oxygen during the day and absorb carbon dioxide offsets process and balances the respiration of the animal kingdom. That atmospheric oxygen is released by plants in the f otosíntesis, where one of its stages indispensably required the presence of sunlight to generate as product of the decomposition of the plant absorbs water through their roots, this gas. At a later stage called dark period because it requires the presence of light the plant fixed carbon dioxide as a nutrient (glucose) and produces several substances that serve more to live.

If the sun were not present , this process would not, as the kingdom plant transforms light energy into chemical energy to promote their own life, but the result is the benefit of the animal kingdom. Without the sun the plant kingdom in the world disappear, so would the animals that depend on it and the subtle balance of atmospheric gases descompensaría, creating chaos in the global biome.

The sun is the developer of plant life, which in turn is the lung of nature.

entire planet lives and maintains a delicate balance that must be respected by the man, ambition and ignorance led to alter what had been achieved over millions of years of evolution and therefore suffer the consequences now. Climate change, loss of biodiversity, water pollution, soil and air are the result of carelessness on the planet.

need to know to respect and ensure respect the conditions that make the world a place fit for the present life and future generations.

Man is just a dot on the vast Universal but has an important purpose of being

The Wild Thornberrys - Wildlife Rescue Online

Why oil and water do not mix? CF No. 178

SCIENCE EASY ; ; ; No. 178

AutoTAS: Maria Cristina Chaler.

Series Juguemos to why?

Why oil and water do not mix?

matter that forms visible or invisible all around us, yet our body is made up of atoms that are mainly electricity, ie, positive charges or protons, concentrated in a small nucleus and the neutralizing electrons revolving around it. These atoms are joined together through their electrical properties, forming molecules of different shapes and sizes that make up all matter in the world.

matter at the macro level, is presented with different properties and the millions of millions of molecules that interact with each other allying up to a greater or lesser degree and generating different states.

Both

water as the oil are liquid at room temperature and the remarkable thing is that when you add oil to water or vice versa, it will be floating on the surface and not mixed. Form a system of two immiscible liquid phases.

To find the answer to why? we must know the intimate nature of substances and especially water and oil.

atoms are joined together to form molecules and these turn out to be a cluster of positive nuclei surrounded by electrons that stabilize. The molecules adopt in three dimensional space in different ways and usually take the geometry of which gives them greater stability. Respecting the symmetry and the electrons are placed in positions of maximum repulsion, forming an electrical conglomerate which usually has two different characteristics

• symmetric electrically charged: nonpolar molecule .

• With electric charges asymmetric: polar molecule

power densities different areas give them fewer electrons or positive and other areas densely electrons or negative charged .

When the molecules are polar become small permanent magnets attract each other from opposite poles and facilitates the formation of the liquid.

Let's see what happens with

water ...

water (H2O) is a polar molecule, the negative area is on the oxygen atom that is a great attractor of electrons and hydrogen are densely positive. When millions of molecules are coupled, oxygen will be attached to hydrogen and vice versa, despite their movements, maintain that attraction, it facilitates the formation of a liquid at room temperature. Les

drew attention to the chemicals being such a small molecule possessed a very high boiling point (100 º C) and wondered why? starting the investigation. The response turned out that in addition to the attraction between the molecular dipoles in the water, the hydrogen atom strengthens the bond between the molecules forming a kind of bridge called "hydrogen bond" that gives stability the liquid state and makes it necessary to give more energy to reach the boiling point, ie passage of the entire mass aqueous vapor state.

oil molecules ...

are polar but not much larger than water, the polarity is not conducive to the state gas, but the size of molecules and the large number of electrons that have around, does that occur and generate transient dipole attractions between molecules, so the oil is present in a liquid with molecules of very fluid motion and less attraction to each other compared to water, so a mass oil like the water will occupy more volume and density as answerable to the law d = mass / volume oil is less dense than water . So floats on it.

oil molecules are of different nature to those of water, so they tend not to penetrate the aqueous phase because they are attracted to the same and tend to stay attracted to each other, in their own field, forming an interface defined and visible separation in the presence of water, chemical and physical properties of the water mass does not allow the diffusion of oil molecules within it.

oil and water are substances that naturally repel each other. A Oil molecules are classified as hydrophobic, which means you have a phobia of water, so they are not able to spread it spontaneously.

If we force the situation with emulsifying agents can generate a suspension of oil in water stabilized for a while, as is the case of facial creams and lotions, but eventually tend to separate.

The fact that oil and water do not mix is \u200b\u200ba stable property of living matter, our body or body of any living being, is a conglomerate of water and fat ( oils in solid form) in where chemical reactions of life, if these substances are solubilizarían each other life would cease to be.

is another wonder built by nature to allow the existence of living beings.

Man is just a dot on the vast Universal but has an important purpose of being