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.
Which of the following statements is false?
| a. |
Entropies of ionic solids that have similar formulas are larger when the attractions among the ions are stronger. |
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| b. |
Entropy usually decreases when a gas is dissolved in a liquid. |
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| c. |
Entropy usually increases when a pure liquid or solid dissolves in a solvent. |
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| d. |
Entropies of more complex molecules are larger than those of simpler molecules. |
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| e. |
Entropies of gases are usually much larger that those of liquids, which in turn are usually larger than those of solids. |
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