3. Which of these displacement reactions will produce the most energy? a) Iron oxide with Aluminium
b) Magnesium and copper oxide
c) Magnesium and silver nitrate

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Talc (french chalk) is the ingredient