Some reactions are possible:
2 CO2 = 2 CO + O2
CO2 + 2 Mg = 2MgO + C
An element.
With the break up of the supercontinenent, Rodinia, there were of course many smaller continents which led to more rainfall and consequently less carbon dioxide in the atmosphere (since rain "washes" the carbon dioxide out of the atmosphere). As a result of less carbon dioxide in the atmosphere, temperatures dropped and ice began to form in polar regions.
Carbon is an element and the definition of an element is that it cannot be broken down into any other element using chemical means. through fusion and fission it could be broken down or built up into oxygen or nitrogen or any number of other elements. But not without unearthly large amounts of energy (usually from a supercollider)
an electron
its an endothermic reaction, because the it broke the bonds of the calcium carbonate (CaCO3) in order to make calcium oxide (CaO) and Carbon dioxide (CO2).
It depends what has broken, some problems are easily repaired. In most cases it is simpler and more cost effective to buy a new one.
federal government is broke. More highway transportation vehicles combust fossil-fuels than do carry payloads of cryogenic liquified carbon dioxide gas. Can you say hypocrates?
There is little free oxygen on Venus, although almost all of the water there apparently broke down into hydrogen and oxygen. The majority of the planetary oxygen is bound as carbon dioxide and sulfur dioxide in the atmosphere, and as oxides on the surface.There is apparently no plant life on Venus, and plants are what supply the atmospheric oxygen on Earth.
Your mucus plug might of broke, I would talk to your ob/gyn
The shape of each substance would definitely be amended. While some may retain their shapes, others would become abominations if the jars or foundations broke.
I know almost had the uber lights that had a core of carbon fiber with wood around it. It was like a mini carbon fiber board inside a wooden board. They are said to be indestructible (mine broke). There are also the fiberprime from foundation and the P2 Technology used by NHS... AWS makes one as well, or at least did.
The gas and the solid are two different compounds, they won't be the same therefore they'd be a mixture.