IUPAC

A New Kind of Regulatory Element in the Genome The common, two-stranded helical structure of DNA was discovered over one hundred years ago. Many researchers would go on to find that DNA molecules

Did you know

“In Snow the oxygen atom has a particularly strong attraction to the electron clouds of the two hydrogen atoms and pulls them closer. This leaves the two hydrogen ends more positively charged, and the center of the “V” more negatively charged. When other water molecules “brush up” against this growing snowflake, strong forces between the negatively charged and positively charged parts of different particles cause them to join together in a very specific three-dimensional pattern with a six-sided symmetry. Each water molecule that joins the snowflake reflects this pattern until eventually we can see its macroscopic six-sided shape.”

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IUPAC Daily chemistry update on both organic&inorganic...and structure naminG...jst got better.. We speak your language

CHEMISTRY IS LIFE
twenty element and oxidation number

1=H=±1--->it exist as both metal and non-metal
2=He=0
3=Li=+1
4=Be=+2
5=B=+3
6=C=-4---->its -4 cause it already has 4 electrons..,let's take this for example, u have $215 and you want a phone of $430, you have to look for the other half cause its almost complete,also with carbon,it has to pair to be filled
7=N=-3
8=O=-2
9=F=-1
10=Ne=0
11=Na=+1
12=Mg=+2
13=Al=+3
14=Si=±4--->It's +4 cause Silicon is a metal
15=P=-3
16=S=-2
17=Cl=-1
18=Ar=0
19=K=+1
20=Ca=+2

We all know water=H2O
now for the proof
H=+1
O=-2
Crossmultiply = Hydrogen take the (2), while Oxygen(1)
Rewrite=H2O

Iron (iii) oxide
iron=+2 or +3
our question says iron (iii), so its Fe+3, O=-2
Fe=+3
O=-2
Cross multiply=(Fe)2(O)3
No difficult right?
Now you try them...

chemist has all the SOLUTION

90 will b confused 9.9will fail
Sandy fact
Kemi's tree

James bond you say??
Holds mission together😂😂😂😂😂😂😂

Icy Facts

Ice

Ice – the crystalline solid formed when water freezes – covers 10 per cent of the Earth’s land mass, and forms seven per cent of the oceans.

Ever wondered what makes some ice cloudy? It’s tiny, trapped air bubbles which refract the light. This is particularly true in home-made ice cubes, because the water used is generally from the tap, which becomes aerated as it pours.

Water expands as it freezes, and freezes from the outside in, so the air is pushed to the centre of the cube, which is why ice cubes tend to have particularly opaque centres.

If you want to make perfectly clear ice, use bottled water, boil it briefly to drive out any air, and freeze it in the pan you’ve boiled it in to avoid incorporating any air.

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Hot ice

Hot water freezes faster than cold water. Aristotle first noted this in the fourth century BC, but it was only accepted by modern science due to the persistence of a Tanzanian schoolboy called Erasto Mpemba who, in 1963, proved it by repeatedly demonstrating that a hot

ice-cream mixture set more quickly than cold. We still don’t know why.

Cold ice

Air is the key ingredient in ice cream; up to a quarter of the finished article is made from trapped particles of air. Beating the mixture incorporates more air but also prevents large ice crystals from forming, which would make it unpleasantly grainy and hard.

This difference in ice cream’s cooling texture has led Maria Brumm, an Earth scientist from Seattle, to describe it as a form of igneous or volcanic rock – under a microscope its structure is almost identical to that of lava.

Glass ice

Water doesn’t always freeze at 0C (32F): it needs something for its molecules to latch on to. Ice crystals form around “nuclei”, such as small particles of dust. If there are none of these, you can get the temperature of water down to -42C (-44F) before it freezes in a process known as “supercooling”.
Glass are liquids whose molecules moves slowly.

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TOP4 CF
1=>
The football-shaped carbon cluster C has been called ‘the most beautiful molecule’, and if you have an eye for symmetry it’s easy to understand why. But if you ever liked chemistry in school, or actually have a career working in chemistry, you know chemistry goes beyond ‘beauty’.
Like physics, there’s an inherent romance to chemistry that stems from ‘truth’, rather than classic aesthetic features. Hopefully, these quick chemistry facts and tidbits will spark or re-new interest in this most noble science.
2=>
Lightning strikes produce Ozone, hence the characteristic smell after lightning storms
Ozone, the triple oxygen molecule that acts like a protective stratospheric blanket against ultraviolet rays, is created in nature by lightning. When it strikes, the lightning cracks oxygen molecules in the atmosphere into radicals which reform into ozone. The smell of ozone is very sharp, often described as similar to that of chlorine. This is why you get that “clean” smell sensation after a thunderstorm.
3=>
The only two non-silvery metals are gold and copper
A metal is an element that readily forms positive ions (cations) and has metallic bonds. These elements have electrons that are loosely held to the atoms, and will readily transfer them. This is why metals are great electrical and thermal conductors — because the electrons move energy.
Most metals’ electrons reflect colors equally, so the sun’s light is reflect as white. Gold and copper, however, happen to absorb blue and violet light, leaving yellow light. It’s worth noting here that copper is also the only metal that is naturally antibacterial.
4=>
Water expands when freezes, unlike other substances
Typically, when something is cold, it shrinks. That’s because temperature describes atomic vibration — the more vibration, the more space it takes, hence expansion. Water is an exception. Even though it vibrates less when it’s frozen, the ice occupies more volume.
That all fb could take..CHEMISTRY IS LIFE...