Ice floats on water. For most other substances, however, the solid sinks in the liquid. Classify each of these statements based on whether they describe water or most other substances. Water Most other substances Answer Bank The solid is less dense than the liquid. High pressure will cause the liquid to become solid. The molecules are closest in the liquid phase. The molecules are closest in the solid phase. In a phase diagram, the solid-liquid coexistence line has a positive slope. High pressure will cause the solid to become liquid. The solid is more dense than the liquid. In a phase diagram, the solid-liquid coexistence line has a negative slope.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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