define the following terms:
1. specific heat
2. heat of vaporization
3. density
4. solvent

Question

Accepted Answer

### 1. Specific Heat
# Brief Explanations:
Specific heat is the amount of heat energy required to raise the temperature of one gram of a substance by one degree Celsius (or one Kelvin). It is a characteristic property of a substance and is denoted by $ c $. The formula for heat energy related to specific heat is $ Q = mc\Delta T $, where $ Q $ is the heat energy, $ m $ is the mass of the substance, $ c $ is the specific heat, and $ \Delta T $ is the change in temperature. Different substances have different specific heat values; for example, water has a relatively high specific heat ($ 4.18 \, \text{J/g}^\circ\text{C} $), which means it can absorb a large amount of heat without a significant increase in temperature.
# Answer:
The amount of heat energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius (or 1 Kelvin). It is a characteristic property of a substance, described by $ Q = mc\Delta T $ (where $ Q $ = heat, $ m $ = mass, $ c $ = specific heat, $ \Delta T $ = temperature change).

### 2. Heat of Vaporization
# Brief Explanations:
The heat of vaporization (also known as the enthalpy of vaporization) is the amount of heat energy required to convert one mole (or one gram, depending on the unit) of a liquid substance into its gaseous state at a constant temperature and pressure (usually at its boiling point). For example, the heat of vaporization of water at 100°C is about $ 40.7 \, \text{kJ/mol} $ (or $ 2260 \, \text{J/g} $). This energy is used to overcome the intermolecular forces holding the liquid molecules together so that they can enter the gaseous phase. The process is endothermic, meaning the substance absorbs heat during vaporization.
# Answer:
The amount of heat energy required to convert one mole (or gram) of a liquid to its gaseous state at constant temperature and pressure (typically at its boiling point). It is used to overcome intermolecular forces in the liquid, e.g., water has a heat of vaporization of ~$ 40.7 \, \text{kJ/mol} $ (or $ 2260 \, \text{J/g} $) at 100°C.

### 3. Density
# Brief Explanations:
Density is a physical property that describes the mass of a substance per unit volume. It is denoted by the symbol $
ho $ (rho) and is calculated using the formula $
ho=\frac{m}{V} $, where $ m $ is the mass of the substance and $ V $ is its volume. Density is a characteristic property of a substance (at a given temperature and pressure) and can be used to identify substances or determine if an object will float or sink in a fluid. For example, the density of water at 4°C is $ 1 \, \text{g/cm}^3 $ (or $ 1000 \, \text{kg/m}^3 $), and the density of gold is much higher ($ 19.3 \, \text{g/cm}^3 $).
# Answer:
A physical property defined as the mass of a substance per unit volume, calculated by $
ho=\frac{m}{V} $ (where $
ho $ = density, $ m $ = mass, $ V $ = volume). It is a characteristic property (e.g., water: $ 1 \, \text{g/cm}^3 $ at 4°C; gold: $ 19.3 \, \text{g/cm}^3 $).

### 4. Solvent
# Brief Explanations:
A solvent is a substance (usually a liquid, but can also be a gas or solid) that dissolves another substance (called the solute) to form a solution. The solvent is typically present in a larger amount than the solute in a solution. In aqueous solutions, water is the most common solvent, as it can dissolve a wide variety of ionic and polar covalent compounds (like salts, sugars, and some acids/bases) due to its polar nature and ability to form hydrogen bonds. Other common solvents include ethanol, acetone, and hexane (used for dissolving nonpolar substances). The solvent provides the medium in which the solute particles are dispersed.
# Answer:
A substance (usually a liquid, but can be gas/solid) that dissolves a solute to form a solution, typically present in a larger amount. Water is a common solvent (dissolves polar/ionic solutes); other solvents (e.g., ethanol, hexane) dissolve specific solutes (e.g., nonpolar for hexane).

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Question

Explanation:

1. Specific Heat

Answer:

2. Heat of Vaporization