Asubstance is composed of only one kind of atom and cant be separated into simpler substances or converted into another substance by chemical processes. under which category would you classify this substance

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.