brass
Zinc
Some batteries need lithium some just have alkali
Lead
It is an element. Elements are composed of atoms, and atoms of elements combine chemically to form compounds.
Oxygen O2
carbon
Zinc
Carbon is the reference element for the definition of the mole. In electrochemistry, the reference element/electrode is the Hydrogen electrode and all electrode potentials are against the hydrogen standard.
lead :)
alloy
The element is lead or Pb
Zinc.
Lead is the only element. all others are compounds.
Cadmium
You think probably to nickel.
Lithium
Lithium