Henry Cavendish was the scientist that demonstrated that water is made up of both oxygen and hydrogen. Cavendish was born in the Kingdom of Sardinia in 1731.
John Dalton in 1803.See the Web Links to the left of this answer for more information.
Antoine Lavoisier
The scientist was Ernest Rutherford
Someone
robert koch
Louis Pasteur
Albert Einstein was a scientist who had a learning disability.Albert showed perseverance
Scientist discovered tectonic plates
Isaac Newton
Antoine-Laurent Lavoisier proved it in France in the late 18th century. I'm not sure about any of the specific experiments he used to prove it, but you can go here if you want to read about one experiment at the link below:
Louis Pasteur
Jan Ingenhousz