To slow down a chemical reaction what should you add

Gymnast always perform on padded mats. how does the mats protect the gymnast

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)