Chemistry: collection of gas over water - Vintage Nostalgia
Chemistry: collection of gas over water

A gas-developing reaction takes place in a heated glass tube and the gas is collected in a container filled with water and inverted in a reservoir of water. As the gas is created, it will displace water from the bottle.

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Chemistry: galvanism, a chemical reaction produces electrical current - Vintage Nostalgia
Chemistry: galvanism, a chemical reaction produces electrical current

Battery producing electricity by chemical means.

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