Write an evidence statement that supports you claim. Make sure you introduce your evidence. According to

During the Microscope lab i don't really need a long answer

Copper, silver, aluminum, cobalt, chromium, mercury 

The teacher is mostly talking about the distillation of a mixture

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water