sentence: Most metals are strong, dense, and good conductors of both electricity and heat.
sentences_after: The mass of the elements in the periodic table, those to the left of a diagonal line drawn from boron to polonium, are metals. Mixtures of two or more elements in which the big component is a metal are known as alloys.
concept_name: metal
headings: Solid Kinds of solids Metals
categories: Basic English 850 words States of matter