ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Metals reacting in acid. Three tests tubes with equal volumes of dilute acid reacting with (from left to right) magnesium ribbon (Mg), iron filings (Fe) and copper turnings (Cu). These reactions allow the metals to be classified in order of reactivity, with magnesium the most reactive and copper the least. Both magnesium and iron are producing hydrogen gas (H2).
Model release not required. Property release not required.