Questions with the keyword 'element'

• When was the first element from the periodic table found and what was it again??? Anna by whvicandanna to Anil, Blanka, Emma, Mike Comments: (No comments so far )
• do you know all of the periosic table by heart and know there chmical symbols eg Nb, O H by whkevandcam to Anil, Blanka, Cees, Emma, Mike Comments: (No comments so far )
• hey emma i dont know if you can answer this but can you use a substance to show a element that is airtight eg O,C by whkevandcam to Anil, Blanka, Cees, Emma, Mike Comments: (No comments so far )