CHEMISTRY Fill in the blanks.

The smallest unit of an element, which may or may not exist independently is called an _____________.

A pure substance which cannot be broken in two or more pure substance is called an _____________.

Elements can be classified as _____________, non-metals and noble gas.

A pure substance whose _____________ contain two or more different atoms, combined together in fixed ratio is called a compound.

Metals can be beaten into thin _____________.