Fill in the blanks with appropriate words a) ........................................................have low shrinkage, a transparent appearance, a broad melting point, and poor wear resistance b) The most of ........................... exhibit an amorphous structure. However, these materials are converted to crystalline phases at high temperatures. The name of this process is........................ c) ................................................... contain the same numbers of free bonding electrons, and “holes” created from the migration of electrons from the valence to ..............................................
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.
Fill in the blanks with appropriate words
a) ........................................................have low shrinkage, a transparent appearance, a broad melting
point, and poor wear resistance
b) The most of ........................... exhibit an amorphous structure. However, these materials are
converted to crystalline phases at high temperatures. The name of this process is........................
c) ................................................... contain the same numbers of free bonding electrons, and “holes”
created from the migration of electrons from the valence to ..............................................
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