in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
Mercury is a metal, and when it's kept at room temperature it's a liquid! Mercury was historically used in glass thermometers, because it expands when it gets hotter. Mercury is also dangerous for people to touch, so most countries don't use mercury thermometers in medicine any more.
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Some animals do have blue blood - lobsters, octopuses, squid, pillbugs, crabs, spiders and barnacles all have blue blood! This is because their blood contains copper, which turns blue when it's oxidised!
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Chem Hub is a YouTube channel interested in making content about the applications of Chemistry in our daily life.