askscience

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Can a Thermos / Vacuum Flask keep a Coffee's temperature the same for over 4 hours?	1
A Question about Balancing Chemical Equations, If i have C₂+2O --> C₂+O₂ , Does the Coefficient (2) before O effect the C₂ (Before the plus sign)? & If it doesn't, Is it only because the Plus sign splits them, Or does the plus sign not matter at all when balancing? Help...	1
A Question about Balancing Chemical Equations, If i have C₂+2O --> C₂+O₂ , Does the Coefficient (2) before O effect the C₂ (Before the plus sign)? & If it doesn't, Is it only because the Plus sign splits them, Or does the plus sign not matter at all when balancing? Help...	1
A complete explanation of Ionic bonds, Metallic bonds, Covalent bonds, & Polar bonds. I have a science exam in 2 days & this is the only thing i'm having problems with. (English is not my native, Neither is the book english, So keep the english simple if possible)	1
Can someone give me a complete explanation of Ionic bonds, Metallic bonds, Covalent bonds, & Polar bonds? I have a science exam in 2 days & this is the only thing i'm having problems with. (English is not my native, Neither is the book english, So keep the english simple if possible) 9th Grade	1
Is the CO Bond a Covalent bond ? Specifically a Non-Polar one?	1
I have a 9th grade exam tommorow, Cant understand rolling fiction and sliding fiction? (Our book is not in English)	1
Basic Question, But do Sex Cells before undergoing Meiosis consist of 23 pairs of chromosomes, Or 23 Chromosomes only? If 23 pairs of chromosomes, Why doesnt it become 63 pairs of chromosomes after replicating in Meiosis?	1
Idk if this belongs here, But what do parrots / macaws that mimick voices need that ability in the nature for?	1
Assuming one can fly around a blackhole at an insanely high speed, After going out, Would everything he once knew changes? Would he be in the far future? & Would he get old?	1

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