Which element is essential for the structure of DNA and RNA molecules alongside carbon hydrogen oxygen and nitrogen?

What is the name of the horizontal rows in the periodic table?

Which gas is responsible for the distinctive smell of rotten eggs?

What is the chemical formula for nitric acid used in fertiliser and explosive manufacturing?

Which element is a semiconductor and is the main component of computer chips?

What is the concentration of a solution measured in moles per litre called?

Which type of reaction in organic chemistry involves replacing a hydrogen atom with another atom or group?

Which process converts sugar into alcohol and carbon dioxide using yeast?

Which process involves passing an electric current through a solution to cause a chemical reaction?

Which acid is used in car batteries as the electrolyte?

What is the chemical formula for chloroform a once common anaesthetic?