Answer:
When an electric current is passed through acidified water, it decomposes to give hydrogen and oxygen gas. The hydrogen gas is obtained at the cathode and the oxygen gas is obtained at the anode
Answer:
An heater, Oven, sun, and fireplaces
Chose which ever you want
D. A set of steps that help scientists gather knowledge
Electrons are valence and free moving so they take place in charge transfer
Answer:
Well they help us understand the properties of matter of course!