The element iron belongs to which main chemical group

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

Is a pencil falling to the floor anon contact force, a force, or a contact force

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.