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An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

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Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Continuous Spectrum

Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.

Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Standard Reaction

A reaction in which the numbers of moles of reactants shown in the balanced equation, all in their standard states, are completely converted to the numbers of moles of products shown in the balanced equation, also sall at their standard state.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.