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The release of heat by a system as a process occurs.

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Thermodynamics

The study of the energy transfers accompanying physical and chemical processes.

Line Spectrum

An atomic emission or absorption spectrum.

Specific Gravity

The ratio of the density of a substance to the density of water.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Ion

An atom or a group of atoms that carries an electric charge.

A brief history of dyeing fabrics

 Dyeing fabrics is giving the fibers a homogeneous color that has a certain degree of strength. The methods of dyeing are very diverse, depending on the properties of the dyes and the dyed fibers.

Dispersed Phase

The solute-like species in a colloid.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.

Capillary Action

The drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces, or the depression of the surface of the liquid when cohesive forces exceed the adhesive forces.