The element iron belongs to which main chemical group

During which time interval does the object travel approximately 10 meters

Which of the following units is not an official si unit

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.