What is the reaction called when oxygen is taken away from a chemical?
Which chemical element has the symbol Ni?
Coal is composed primarily of which chemical element?
Hg is the symbol for which chemical element?
For which chemical element is N the symbol?
Which chemical element has the symbol Ne?
Which element has the chemical symbol 'C'?
What is the chemical symbol for the element silver?
What stretch of water separates Greenland and Iceland?
Which European capital primarily sources its hot water supply from geothermal springs?
Helsinki | Oslo | Reykjavik | Dublin
