The Elements - Robert Doyle - Humphry Davy Flashcards
1
Q
Define an element.
A
An element is a substance that cannot be split into simpler substances by chemical means
2
Q
What did Robert Boyle do?
A
The first accurate definition of an element was given by an Irish chemist called Robert Boyle
3
Q
What did Robert Boyle also predict?
A
He predicted that elements combined together in chemical reactions to form what are now called compounds.
4
Q
What did Humphry Davy do?
A
He discovered many elements by passing electricity through their compounds. He discovered potassium.
5
Q
List the elements that Humphry Davy discovered
A
potassium, sodium, calcium, barium, strontium and magnesium by passing electricity through compounds containing these elements.
