What is a dark mysterious and non-nicotine mineral containing sample of a very common silicate? it's geology actually.

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

What type of electromagnetic radiation has a shorter wavelength than blue light

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together