Definition: The chemical element with atomic number 78 and symbol Pt; a dense, malleable, ductile, highly unreactive, silverish-white transition metal of great value.

Alright class, settle down, let’s take a look! Today we’re tackling ‘platinum,’ a word that sounds quite grand, Let's break it down with a rhyming hand. The dictionary tells us, clear and bright, It’s an element number seventy-eight, shining light! With the symbol “Pt,” you see it there, A metal special, beyond compare. Now, "dense" means heavy, solid and true, Like a weighty treasure for me and you. “Malleable” – it bends to your will, Shape it as needed, standing still! "Ductile" too, it stretches with ease, Making wires and shapes that please. And “unreactive,” don’t you fret, It doesn't easily change, haven’t met A reaction quick, a fiery blast, Platinum’s steady, built to last! “Silverish-white” is its lovely hue, Like moonlight shimmering, fresh and new. And finally, “of great value,” don't you see? It’s prized for its qualities, wonderfully free! So, platinum – a metal strong and bright, A fascinating element, a beautiful sight! Do you have any questions about this special find?