To start the chemical reaction, what must happen between the enzyme and the substrate?.

What type of reaction fuels the processes seen here?

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

Silver reacts with oxygen to produce silver oxide. (write balanced chemical equation and identify type of chemical reaction.)