Categorie: Tutti - chemistry - elements - reactions - concentration

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Analysis Connections

The document outlines various fundamental concepts and principles within the field of chemistry. It touches on the definitions and roles of anions and cations, explaining how these ions form through the loss or gain of electrons, influencing their charge and size.

Analysis Connections

Analysis Connections

Titration

Solutions
Solute

Purity

Ph

Solvent

Aqueous

Stoichiometry
The Mole

Avogadro's Number

Density

Archimedes Principle

Molar Mass

Empirical Formula

Reactions

Concentration
Concentration is the ratio of solute in a solution to either solvent or total solution.

Concentration Formula: M = N/V

Precipitation and Selective Precipitation

Reagents
Limiting Reagents

The reactant that is used up completly in a reaction is called a limiting reagent. They are substances that are completely used up in the completion of a chemical reaction.

Anions
Larger
Negative
Gain Electrons
An anion is as an atom that is negatively charged
Cations
An cation is an atom or molecule that is positively charged
Positive
Loose Electrons
Smaller

Paper Chromatography

Pure Substances
Elements

Nobles gases

Metalloids

Metals

Non-Metals

Compounds
Mixtures
Heterogeneous
Homogenous
A mixture is composed of one or more pure substances in varying composition

A small spot of a soluble mixture is placed on the paper. The solvent carries a mixture up the paper. Different components of the mixture have different relative affinities to the stationary and mobile phases and so travel up the paper at different speeds. This separates the components.

Flame Test

Atoms and their excited state
An atom or ion is excited by heating it to high temperatures, the electrons are promoted from their normal unexcited state into higher orbitals.
Higher Potential energy
Flame Colour
Emmison spectra

the emission spectrum is used to identify different elements

Flame
Size
Duration
Colour