All organisms on our planet are based on carbon-containing molecules. It is the main building block of living tissue. As a consequence, chemical reactions involving oxygen, hydrogen, and water are just several examples of the essential processes that must take place to sustain such life.
It is conceivable that life could emerge on other worlds that is not carbon based. Some propose silicon-based life as a possibility. In which case we might discover a brave new silicon valley on a distant planet. Try to imagine such a world. What do you see? Respond to what one of your classmates sees.
Carbon and silicon share characteristics. Silicon and carbon atoms have individual atoms that have four bonds with other elements like Oxygen. Carbon and silicon creatures would have polymers that interact with oxygen. Silicon oxidizes to a solid (sand) over carbon oxidizes to a gas, so it's highly doubtful that silicon would be a life form. One reason is if everything is solid, how is the life from supposed to "unload" waste? Carbon life forms also have Glycogon in their livers and silicon life forms don't. The life forms made of silicon was made by Julius Sheiner and these life forms could survive at very hot temperatures. These are crystal, metal or aluminum creatures from material from volcanoes. One would imagine that these fictional life-forms would be solar powered with silicone fluid as it's blood, but since everything turns into solid or doesn't have many handiness compounds (not as many as carbon-based organisms) Silicon life forms wouldn't regulate functions as well as us carbon life-forms so that's why it's fiction as well. A lot of silicon compounds are reactive or unstable. Star Trek had some colorful blobs for silicon creatures. Fictional silicon creatures has animated crystals for appearance.
I found out some other ways silicon creature could look like Silicon creatures would look like something out of fiction, because what organic heart or organ can function inside metal unless you're a technologically advanced cyborg? I can tell this whole idea comes from androids. It would be a planet full of alien cyborgs or androids in a civilization. Alien androids fits this week's description of silicon-based life very well. Alien androids would range from stupid to really intelligent depending on their 'brain'. These things sound like the sentinels in The Matrix or the sentinels of Crysis (PC) or the smart ones you see in Transformers. I see war in these types of silicon worlds. The machines would want resources like of like Star Trek's (silicon lifeforms) Borg require large amounts of natural resources. There wouldn't be any form of architecture; just life-support and basis needs in the Borg's dystopian civilization. They would have technologies not known to man, because their alien brains have so much better accuracy than ours.