Chemistry and Nanotechnology: Intermolecular Forces, States of Matter, and Sustainability

Practice flashcards covering intermolecular forces, phases of matter, chemical properties of liquids, sustainability concepts like footprints and Green Chemistry, and fundamentals of Nanotechnology.

Dipole-Dipole Interaction

The type of interaction that occurs when polar molecules come together and their charged parts align with each other; these molecules possess permanent dipoles.

Induced Dipole (Temporary Dipole)

A temporary state of polarization that occurs in non-polar molecules and noble gases due to instantaneous fluctuations in electron density.

London Forces

Weak intermolecular attractions occurring between temporary dipoles (induced dipoles), representing the dominant force in non-polar molecules.

Hydrogen Bond

A strong dipole-dipole interaction occurring when a hydrogen atom is directly bonded to highly electronegative atoms like $F$, $O$, or $N$.

Ion-Dipole Interaction

A weak attraction occurring between ions and polar molecules, such as when $NaCl(s)$ dissolves in $H_2O(l)$.

Amorphous Solids

Solids that do not have a regular geometric arrangement of particles, such as glass, plastic, rubber, and butter.

Glassy Transition Temperature

The specific temperature at which an amorphous solid begins to soften upon heating.

Crystalline Solids

Solids characterized by high hardness, incompressibility, and a definite geometric order of their chemical species.

Ionic Crystals

Solids formed by the electrostatic attraction between cations and anions, which do not conduct electricity in solid form but do so in liquid or solution states.

Covalent Crystals

Solids that form a network structure through strong covalent bonds, such as diamond ($C$), graphite ($C$), and silicon carbide ($SiC$).

Viscosity

The resistance shown by liquids against flowing; as intermolecular forces increase, viscosity generally increases.

Vaporization

An endothermic (heat-absorbing) process where liquid molecules transition into the gas phase.

Equilibrium Vapor Pressure

The pressure exerted by vapor molecules on a liquid when the rate of evaporation equals the rate of condensation in a closed container.

Boiling Point

The temperature at which the vapor pressure of a liquid equals the external atmospheric pressure.

Adhesion

The attractive force between particles of different substances, such as water sticking to a glass surface.

Cohesion

The attractive force between the same type of molecules within a substance, which leads to the formation of droplets.

Surface Tension

The phenomenon caused by cohesive forces where the surface of a liquid behaves like an elastic skin, often leading to a spherical shape in droplets to minimize surface area.

Capillary Action

The movement of a liquid through narrow tubes or porous materials, driven by the relationship between adhesion and cohesion forces.

Sustainability

The principle of meeting today's needs without consuming the rights and resources of future generations.

Water Footprint

The total volume of freshwater consumed directly and indirectly by an individual or during the production of a product.

Carbon Footprint

The total amount of greenhouse gases, expressed as $CO_2$ equivalent, emitted into the atmosphere by a person, product, or activity.

Green Chemistry

A sustainable chemical approach characterized by 12 principles aimed at preventing waste, maximizing atom economy, and using safer chemicals.

Atom Economy

A principle of Green Chemistry that focuses on the most efficient use of raw materials by maximizing their incorporation into the final product.

Nanotechnology

The branch of science dealing with the production and processing of materials at the scale of $1$ to $100$ nanometers.

Top-Down Approach

A nanotechnology method where large pieces of bulk material are gradually broken down into nanometer-sized particles using energy.

Bottom-Up Approach

A nanotechnology method involving the assembly of particles at the atomic or molecular level to create nanostructures.

Heavy Metals

Metals with a density higher than $5\,g/cm^3$, such as Lead ($Pb$), Mercury ($Hg$), and Cadmium ($Cd$), which can accumulate in living tissues and cause harm.

Alloy

A homogeneous mixture formed by melting and cooling two or more metals together, such as Bronze (Copper and Tin) or Brass (Copper and Zinc).

Atatürk Forest Farm (Atatürk Orman Çiftliği)

Established by Mustafa Kemal Atatürk in 1925 on barren land to demonstrate sustainable agricultural practices, scientific farming, and environmental reclamation.