Which characteristic describes most metals in the solid phase?
Solid metals are often shiny, ductile(can be pulled into wires), malleable(can be hammered into thin sheets), and good condutors of heat and electricity.
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Malleable substances can be hammered into a thin sheet. This is a characteristic of all metals in the solid phase. In contrast nonmetals are brittle in the solid phase. If you take a piece of sulfur and whack it with a hammer a few times you will turn it into sulfur powder not a thin sheet of sulfur.
solidification is the process of transformation form a liquid phase to a solid phase. i requires heat removal from the system. metals have a melting point (well defined temperature) above which liquid is stable and below that solid is stable. solidification is a very important process as it is most widely used for shaping of materials to desired product.
What describes a unique property in which a substance can go from a solid to a gas without becoming a liquid?
For most substances, the solid phase is more dense than the liquid and gas phases. The liquid phase is less dense than the solid phase but more dense than the gas phase, and the gas phase is less dense than either the solid or liquid phases. Water is an exception. Its solid phase (ice) is less dense than the liquid phase.